Correspondence map
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John Frederick William Herschel
James David Forbes
Mary Somerville publishes Mechanism of the Heavens
1831
Sir John Herschel is created Knight of the Royal Hanoverian Guelphic Order
1831
Sir John Herschel publishes Preliminary Discourse on the Study of Natural Philosophy as part of Dionysius Lardner’s Cabinet Cyclopaedia.
1831
Birth of Isabella Herschel, daughter of John Frederick William Herschel and Margaret Brodie Stewart
5 June 1831

Autograph letter signed by sender. When they last met, John Frederick William Herschel had promised to show him some of the wonders of his 20-ft. reflector. Is in town for a few days and would welcome the chance of visiting him.
23 May 1831 Sender: James David Forbes Reference number: HS/7/275
Autograph letter signed by sender. Is proposing to visit the continent after the Oxford meeting to make observations and intends taking some meteorological instruments. Would like John Frederick William Herschel's advice on some points regarding the large thermometer filled with a blue liquid.
10 May 1832 Sender: James David Forbes Reference number: HS/7/276
Copy letter in John Herschel's hand. Is grateful for John Frederick William Herschel's letter and offer of assistance. Will come to London earlier than expected so that he can call on him and discuss his problems before foreign travel. Would be glad of an introduction to Mario Gemmellaro and other scientists John Frederick William Herschel thinks would help him in his studies.
26 May 1832 Sender: James David Forbes Reference number: HS/7/277
Autograph letter signed by sender. Regarding John Frederick William Herschel's actinometers, intends to compare their results when in Switzerland and would be pleased if John Frederick William Herschel has any determinations on them. Outlines the plan of his experiments. Thinks John Frederick William Herschel should publish an account of them before James Forbes publishes the results of his experiments. Met L. A. J. Quetelet in Brussels. Intends visiting the Pyrenees.
17 July 1832 Sender: James David Forbes Reference number: HS/7/278
Autograph letter signed by sender. Has postponed answering his letter until he has some worthwhile results to transmit. Local savants are unwilling to take much trouble but has met a German meteorologist, L. F. Kämtz, and together they have carried out observations on some of the mountains. Encloses some of the actinometer readings. Has 80 series of magnetic observations.
2 October 1832 Sender: James David Forbes Reference number: HS/7/279
Autograph letter signed by sender. Returned suddenly from the continent and found John Frederick William Herschel's letter to his brother awaiting him. Outlines his reason for applying for the vacant post at the University and would welcome a testimonial from John Frederick William Herschel. Brewster is his chief rival. Gives a few observations on his recent trip to the continent.
1 December 1832 Sender: James David Forbes Reference number: HS/7/280
Autograph letter signed by sender. Is sorry to trouble him again but would like a letter from John Frederick William Herschel that he can print with his testimonials, as David Brewster has now printed John Frederick William Herschel's letter, also [William?] Ritchie. Awaits the results before setting out for Europe.
13 December 1832 Sender: James David Forbes Reference number: HS/7/281
Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Sends thanks and congratulations for paper verifying electric origins of all magnetism. Will give James Forbes an actinometer with complete instructions. Includes some instructions for obtaining and using it. Sends regards to Mario Gemellaro, should James Forbes go to Catania.
23 May 1832 Sender: John Frederick William Herschel Reference number: HS/21/110
Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Gives James Forbes permission to use John Frederick William Herschel's letter to James Forbes's brother in any way James Forbes sees fit to obtain the Chair of Natural Philosophy (at Edinburgh), but still does not wish directly to promote James Forbes's selection. Briefly discusses results of James Forbes's experiments with the actinometer.
7 December 1832 Sender: John Frederick William Herschel Reference number: HS/21/124
Copy letter in John Herschel's hand. Suggests that James Forbes use his instruments to compare the force of solar radiation at high and low elevations. Delineates possible methods for this experimentation, and lists results of similar experiments. Includes further information on the actinometer.
5 August 1832 Sender: John Frederick William Herschel Reference number: HS/25/3/8Sir John Herschel receives the Royal Medal from the Royal Society
1833:
The Medal is awarded "For his paper on nebulae and clusters of stars, published in the Philosophical Transactions for 1833."
Sir John Herschel publishes A treatise on astronomy as part of Dionysius Lardner’s Cabinet Cyclopaedia.
1833
Birth of William James Herschel, son of John Frederick William Herschel and Margaret Brodie Stewart
1833
Sir John Herschel departs for South Africa with his wife and their three children
13 November 1833

Autograph letter signed by sender. Sending a copy of his testimonials and one of his reports on meteorology. Was elected to the chair of Natural Philosophy by a majority of 21 to 9. His cousin Leslie Melville hopes to be able to provide John Frederick William Herschel with letters before John Frederick William Herschel's departure for the Cape.
1 February 1833 Sender: James David Forbes Reference number: HS/7/282
Autograph letter signed by sender. Thanks for his last letter. Assures him he has no bitter feelings over the spirit of David Brewster after his disappointment of the election. May make any use he wishes of his actinometer results. Intends going over to France in a month's time, but is very busy at the present time.
6 April 1833 Sender: James David Forbes Reference number: HS/7/283
Autograph letter signed by sender. Has acquired a 7-ft. Newtonian telescope of William Herschel made in 1802. Is well preserved but the speculum appears to be tarnished. Would like to bring it to London to obtain John Frederick William Herschel's advice on its shortcomings. Is going to France to collect the actinometers and the results of L. F. Kämtz.
28 April 1833 Sender: James David Forbes Reference number: HS/7/284
Autograph letter signed by sender. Sending the speculum to Slough in order that John Frederick William Herschel may examine it. Departs for Paris tomorrow. Hopes to see him at the Cambridge meeting.
13 May 1833 Sender: James David Forbes Reference number: HS/7/285
Autograph letter signed by sender. Sending a proof of a paper he is now having printed. Wishes him all the best for his forthcoming expedition.
4 October 1833 Sender: James David Forbes Reference number: HS/7/286
Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Congratulates James Forbes on obtaining, after some difficulty, the Chair of Natural Philosophy at Edinburgh. Accepts offer to discuss meteorology with James Forbes's relation Leslie Melville[?], and hopes to mention his actinometer.
20 February 1833 Sender: John Frederick William Herschel Reference number: HS/21/129
Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Wishes James Forbes well in [Edinburgh] and leaves addresses where John Frederick William Herschel may be reached [at the Cape].
16 October 1833 Sender: John Frederick William Herschel Reference number: HS/21/151Birth of Margaret Louisa Herschel, daughter of John Frederick William Herschel and Margaret Brodie Stewart
1834
Sir John Herschel serves as President of the Literary and Philosophical Society of the Cape of Good Hope
1835
Halley’s comet becomes visible
28 November 1835

Copy letter in John Herschel's hand. Mentions letter from William Whewell sending JF John Frederick William Herschel's interesting but puzzling meteorological results. Will communicate them to a Dr. [John?] Davy at Malta. Has been busy preparing lectures. Made a short tour in England last summer. G. B. Airy has been awarded the Lalande Medal.
5 February 1835 Sender: James David Forbes Reference number: HS/7/287
Autograph letter signed by sender. Has just come from Scotland on his way to the continent for two or three months. Pleased to hear John Frederick William Herschel's work is making good progress. Does he know that David Brewster made observations for two days of the year? Has sent him his paper on polarization. Has been occupied by the preparation of his paper on optics. Hopes to reduce his observations made on the continent in 1832. Would like T. C. Robinson, the instrument maker, to see John Frederick William Herschel's instructions.
27 May 1835 Sender: James David Forbes Reference number: HS/7/288
Copy letter in John Herschel's hand. Unable to assist John Frederick William Herschel's friend Major [Abraham] Cloete as JF was away from home. Comments on results of John Frederick William Herschel's table and JF's own papers and scientific occupations. B.A.A.S. would welcome John Frederick William Herschel's ideas for meteorological work. S. D. Poisson has published a new work on heat, in which he attacks J. B. Fourier.
25 October 1835 Sender: James David Forbes Reference number: HS/7/289
Copy letter in John Herschel's hand. Discusses reduction of barometric observations. Praises the Cape's climate.
30 May 1835 Sender: John Frederick William Herschel Reference number: HS/25/4/11Birth of Alexander Stewart Herschel, son of John Frederick William Herschel and Margaret Brodie Stewart
5 February 1836

Autograph letter signed by sender. Encloses the second part of his paper on heat. Has procured some meteorological readings from Malta. Trusts everything is proceeding well at the Cape. Met G. B. Airy recently at Greenwich, where C. F. Gauss's apparatus is now installed. Mr. Gaubert is dead, also A. M. Ampère and G. C. F. M. R. De Prony.
12 August 1836 Sender: James David Forbes Reference number: HS/7/290
Copy letter in John Herschel's hand. Pleased to hear John Frederick William Herschel's work is progressing. Disappointed with Dr. [John] Davy's meteorological observations at Malta. Comments on other scientific news, including recent eclipse, [Andrew] Crosse's controversial artificial crystals at Bristol B.A.A.S. meeting, JF's 1832 observations in Switzerland, and William Whewell's and William Buckland's books.
14 November 1836 Sender: James David Forbes Reference number: HS/7/291
Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Discusses methods of magnetic observation, John Frederick William Herschel's actinometric readings in the Cape, and the need for more physical observatories.
15 November 1836 Sender: John Frederick William Herschel Reference number: HS/21/213Victoria becomes Queen of the United Kingdom
20 June 1837
Birth of John Herschel, son of John Frederick William Herschel and Margaret Brodie Stewart
29 October 1837

Autograph letter signed by sender. Encloses observations made by some of his pupils who have now formed a physico-mathematical society.
19 January 1837 Sender: James David Forbes Reference number: HS/7/292
Autograph letter signed by sender. Sending a letter via Capt. Basil Hall. Is surprised John Frederick William Herschel did not mention the starry showers of 12 Nov. in his last letter, D. F. J. Arago is investigating them. J. B. Biot has published an extension of [Denison?] Olmsted's theory. Humphrey Lloyd has produced an interesting book on the undulatory theory. What measure does John Frederick William Herschel employ for the force of the wind? Has got William Whewell's anemometer. Influenza prevalent. William Farish has been succeeded by Robert Willis.
14 February 1837 Sender: James David Forbes Reference number: HS/7/293
Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Thanks James Forbes for papers and requests copies of those John Frederick William Herschel has borrowed; comments on John Frederick William Herschel's observations on solar heat, light, and lines in spectra.
25 September 1837 Sender: John Frederick William Herschel Reference number: HS/21/229Sir John Herschel returns from South Africa
1838: A banquet in presence of Queen Victoria is given to celebrate his return to Britain and made a Baronet.
Sir John Herschel serves his first term as President of the Royal Astronomical Society
1839: to 1841
Birth of Maria Sophia Herschel, daughter of John Frederick William Herschel and Margaret Brodie Stewart
1839
William Henry Fox Talbot presents his paper-based photographic process at the Royal Society
1839

Autograph letter signed by sender. Regrets that John Frederick William Herschel had to write another letter regarding the two papers he forwarded. Missed him when in London. Saw L. J. M. Daguerre's specimen and also those of J. N. Niepce, the latter undoubtedly the originator. Has made an excursion to the volcanic region of the South of France.
9 July 1839 Sender: James David Forbes Reference number: HS/7/294
Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Discusses prospects for meteorological committee of B.A.A.S., on which they both will serve. Lacks time for it. Does not need hourly observations made by Committee of Physico-Mathematical Society of Edinburgh.
30 March 1839 Sender: John Frederick William Herschel Reference number: HS/22/5
Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Writes 'in haste' to thank James Forbes for a pair of papers. Comments on Louis Daguerre's pictures in Paris.
6 June 1839 Sender: John Frederick William Herschel Reference number: HS/22/15Sir John Herschel publishes in the Philosophical Transactions
1840: Sir John Herschel publishes “On the chemical action of the rays of the solar spectrum on preparations of silver and other substances, both metallic and non-metallic; and on some photographic processes”

Copy letter in John Herschel's hand. Would like to know the degree of sensibility to heat of John Frederick William Herschel's paper. The paper of W. H. F. Talbot is useless for his purpose as only violet heat affects it. Did John Frederick William Herschel use a flint glass prism for his spectrum experiments? Has he ever used photography to show the impression of polarization and diffraction?
9 March 1840 Sender: James David Forbes Reference number: HS/7/295
Copy letter in John Herschel's hand. Thanks for John Frederick William Herschel's letters and the paper on photography with special reference to the effects of heat. Was present at the R.S.L. during consideration of a national observatory. Would like John Frederick William Herschel's opinion. Is working on a supplementary report on meteorology.
17 August 1840 Sender: James David Forbes Reference number: HS/7/296
Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. On the preparation of paper to exhibit a thermal spectrum.
13 March 1840 Sender: John Frederick William Herschel Reference number: HS/22/44
Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. In reply to MM/16/137 regaridng the Meteorological Committee. Opinion on taking meteorological observations.
10 June 1840 Sender: John Frederick William Herschel Reference number: HS/22/54
Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Explains efforts at using a makeshift apparatus for 'fixing the spectrum.' Discusses current confusion and ultimate hope surrounding James Forbes's meteorological recommendations. In a postscript, notes observations of meteors in Persei.
10 August 1840 Sender: John Frederick William Herschel Reference number: HS/22/62
Copy letter in John Herschel's hand. Outlines theory behind and method for preparing thermographic paper, which allows observers to determine 'what share each ray of the spectrum bears in producing the observed total effects.'
3 March 1840 Sender: John Frederick William Herschel Reference number: HS/25/6/1Sir Robert Peel becomes Prime Minister
1841
Birth of Amelia Herschel, daughter of John Frederick William Herschel and Margaret Brodie Stewart
1841

Autograph letter signed by sender. Sending a notice about the polarization of the sky. Also some practical papers he set at Durham. Has the obelisk ready for shipment to the Cape. Has asked Richard Taylor to send him a copy of his report on Meteorology.
26 March 1841 Sender: James David Forbes Reference number: HS/7/297
Copy letter in John Herschel's hand. About various testimonials, from John Frederick William Herschel and others, for JF's application for a government pension.
30 December 1841 Sender: James David Forbes Reference number: HS/7/298Birth of Julia Herschel, daughter of John Frederick William Herschel and Margaret Brodie Stewart
1842
Sir John Herschel publishes in the Philosophical Transactions
1842: Sir John Herschel publishes “On the action of the rays of the solar spectrum on vegetable colours, and on some new photographic processes”

Copy letter in John Herschel's hand. Is grateful for John Frederick William Herschel's letter and commendation regarding application for a government pension; will endeavor to carry out his recommendations.
12 January 1842 Sender: James David Forbes Reference number: HS/7/299
Autograph letter signed by sender. Would like to know the composition of the fluid in John Frederick William Herschel's actinometers.
6 April 1842 Sender: James David Forbes Reference number: HS/7/301
Autograph letter signed by sender. Would like to see him for a few minutes to discuss a paper he is preparing for the Royal Society [of London] on actinometer observations.
12 May 1842 Sender: James David Forbes Reference number: HS/7/302
Autograph letter signed by sender. No meeting of the Royal Society [of London] on the 19th but could arrange to see him before dinner. Hopes to spend the summer amongst the glaciers.
14 May 1842 Sender: James David Forbes Reference number: HS/7/303
Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Instructions for preparing liquid for the actinometer. Describes 'very strange' experiments on the spectrum as well as an 'unusual' cloud formation.
9 April 1842 Sender: John Frederick William Herschel Reference number: HS/22/115
Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Compares actinometric measurements of radiation. Explains interest in total eclipse relative to actinometry. Discusses the possibility of making actinometric measurements by photographic means.
2 June 1842 Sender: John Frederick William Herschel Reference number: HS/22/122
Contemporary copy in sender's hand, signed by sender. Received James Forbes's paper on 'thermographic process.' Believes that thermic rays were responsible for experimental results of James Forbes, J. W. Draper, and Ludwig Moser. John Frederick William Herschel's theory of and experiments with thermic rays, which are different from 'calorific' and visible rays, in solar spectrum.
15 November 1842 Sender: John Frederick William Herschel Reference number: HS/25/6/15
Copy of a letter, incomplete. Protesting about the refusal of the Royal Society of Edinburgh to publish Thomas Brisbane's magnetic observations; hopes it will be reconsidered. Thinks James Forbes's theory on glaciers has good points, but comments on some of its shortcomings.
19 January 1843 Sender: John Frederick William Herschel Reference number: HS/7/304
Autograph letter signed by sender. Is grateful for his letter and photographs. Will send him his paper on glaciers, which he is pleased to see interests him. Thomas Brisbane must be in error about the refusal of the Royal Society of Edinburgh to print his magnetic observations.
23 January 1843 Sender: James David Forbes Reference number: HS/7/305
Copy of a letter, incomplete. Protesting about the refusal of the Royal Society of Edinburgh to publish Thomas Brisbane's magnetic observations; hopes it will be reconsidered. Thinks James Forbes's theory on glaciers has good points, but comments on some of its shortcomings.
19 January 1843 Sender: John Frederick William Herschel Reference number: HS/22/146Birth of Matilda Rose Herschel, daughter of John Frederick William Herschel and Margaret Brodie Stewart
1844
Sir John Herschel serves as President of the British Association
1845

Copy letter in John Herschel's hand. Believes John Frederick William Herschel expressed support for pension for surviving child of Thomas Henderson. Comments on this, stating his own view that she is already well provided for.
11 January 1845 Sender: John Frederick William Herschel Reference number: HS/7/306
Copy letter in John Herschel's hand. Sends new edition of JF's Travels [through the Alps of Savoy]. Hopes John Frederick William Herschel will examine the theoretical part.
12 July 1845 Sender: James David Forbes Reference number: HS/7/307
Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Hopes to add James Forbes's name to B.A.A.S. Meteorological Committee, and to see James Forbes at Cambridge meeting of the committee.
10 June 1845 Sender: John Frederick William Herschel Reference number: HS/22/241
Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Thanks James Forbes for second edition of work on the Alps. Praises first edition.
11 August 1845 Sender: John Frederick William Herschel Reference number: HS/22/246Birth of Francisca Herschel, daughter of John Frederick William Herschel and Margaret Brodie Stewart
1846
Sir John Herschel serves his second term as Foreign Secretary of the Royal Astronomical Society
1846: To 1847
Sir John Herschel serves his second term as President of the Royal Astronomical Society
1847: Until 1849
Sir John Herschel receives the Copley Medal
1847: Sir John Herschel receives the Copley Medal of the Royal Society "For his work entitled Results of Astronomical Observations made during the years 1834, 1835, 1836, 1837 and 1838, at the Cape of Good Hope; being a completion of a telescopic survey of the whole surface of the visible heavens, commenced in 1825"
Sir John Herschel publishes a paper
1847: Sir John Herschel publishes Results of astronomical observations made during the years 1834, 5, 6, 7, 8, at the Cape of Good Hope; being a completion of a telescopic survey of the whole surface of the visible heavens, commenced in 1825.

Copy letter in John Herschel's hand. Comments, after delays due to busyness, on John Frederick William Herschel's queries on the calibration of actinometers and gives results of experiments.
3 February 1847 Sender: James David Forbes Reference number: HS/7/308
Copy letter in John Herschel's hand. Includes diagram. Sympathizes with John Frederick William Herschel's feelings of regret over actinometer readings. Has procured a new thermometer and carried out experiments toward correction of actinometers.
4 March 1847 Sender: James David Forbes Reference number: HS/7/309
Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Believes all actinometric measurements made are useless because they did not take into account the rate of expansion of the liquid, which is not constant.
1 March 1847 Sender: John Frederick William Herschel Reference number: HS/22/304
Copy of a letter. Asks for details of several actinometers.
22 June 1847 Sender: John Frederick William Herschel Reference number: HS/22/320The Pre-Raphaelite Brotherhood is formed, by John Everett Millais, Dante Gabriel Rosetti and others
1848
Napoleon III is elected first President of France
20 December 1848
Sir John Herschel publishes Outlines of Astronomy.
1849

Autograph letter signed by sender. Regarding the possibility of a new edition of John Frederick William Herschel's Treatise Astr. originally published in Lardner's Cyclopaedia. Has found it very useful for his students.
29 May 1849 Sender: James David Forbes Reference number: HS/7/310
Autograph letter signed by sender. B.A.A.S. and Royal Society of Edinburgh have been approached to apply to the government for finance to send an observer and reflector to the Cape Observatory. Does John Frederick William Herschel think this advisable, with his knowledge of conditions at the Cape?
23 November 1849 Sender: James David Forbes Reference number: HS/7/311
Draft letter. Agrees that it would be desirable to make further observations at the Cape, but foresees difficulties, especially liaison with the Astronomer Royal at the Cape.
26 November 1849 Sender: John Frederick William Herschel Reference number: HS/7/312
Copy of draft letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Agrees that it would be desirable to make further observations at the Cape, but foresees difficulties, especially liaison with the Astronomer Royal at the Cape.
26 November 1849 Sender: John Frederick William Herschel Reference number: HS/23/75Sir John Herschel is appointed Master of the Mint
1850

Copy letter in John Herschel's hand. Was pleased by John Frederick William Herschel's favorable opinion of his paper on the Vivarais. Finds John Frederick William Herschel's arguments concerning [John] Michell's theory of probabilities unconvincing. Will soon write a paper on the problems.
6 November 1850 Sender: James David Forbes Reference number: HS/7/313
Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Describes travels through a volcanic district in France, highlighting beautiful scenery, various rock and lava formations, analyzing their causes, and comparing John Frederick William Herschel's observations with James Forbes's.
31 October 1850 Sender: John Frederick William Herschel Reference number: HS/23/93Sir John Herschel serves as juror of the Great Exhibition
1851

Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Asks James Forbes to deliver papers about professorships and a council position at a new university at Sydney to interested, qualified parties.
October 1851 Sender: John Frederick William Herschel Reference number: HS/23/108Birth of Constance Anne Herschel, daughter of John Frederick William Herschel and Margaret Brodie Stewart
1855
Sir John Herschel is elected Foreign Associate of the Institut de France
1855
Sir John Herschel resigns from his position as Master of the Mint
1855

Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Thanks James Forbes for his dissertation on the Progress of Mathematical and Physical Science. Discusses health of James Forbes and John Frederick William Herschel. Suggests that some actinometric measurements are not as seriously flawed as at first thought [see John Frederick William Herschel's 1847-3-1].
14 January 1857 Sender: John Frederick William Herschel Reference number: HS/23/187
Autograph letter signed by sender. Thanks for John Frederick William Herschel's article on meteorology from the Encyclopaedia Britannica. Has been investigating climatology lately. His own health has not been good. Sends some of his own reprints that may be of interest.
19 May 1858 Sender: James David Forbes Reference number: HS/7/314
Autograph letter signed by sender. Article on glaciers is from the Encyclopaedia Britannica and was restricted because of space. Mistakes by John Tyndall and others have arisen because his own Letters on Glaciers has been overlooked. William Whewell is to be married.
8 June 1858 Sender: James David Forbes Reference number: HS/7/315
Autograph letter signed by sender. Has he read John Tyndall's paper on the plasticity of ice and the theory of glaciers? Indebted to Michael Faraday for some excellent observations and the term 'Regulation.'
16 July 1858 Sender: James David Forbes Reference number: HS/7/316
Autograph letter signed by sender. Has requested his publishers to send John Frederick William Herschel his recent volume on glaciers. Thanks for John Frederick William Herschel's Physical Geography.
19 March 1859 Sender: James David Forbes Reference number: HS/7/317
Autograph letter signed by sender. Is a candidate for the position of Principal at St. Andrews United College in succession to David Brewster, who has moved to Edinburgh. Would be pleased to receive a testimonial from John Frederick William Herschel. Has already received one from Brewster.
3 November 1859 Sender: James David Forbes Reference number: HS/7/318