Correspondence map
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Mario Gemmellaro
John Frederick William Herschel
John Frederick William Herschel moves to 56 Devonshire St., Portland Place, London
1824
John Frederick William Herschel serves as Secretary of the Royal Society
30 November 1824
Draft letter. Is grateful for the assistance received while in Catania. Comments on the divisions of the barometer. His own barometer was undamaged after travelling 500 miles over impassible roads. Would be pleased to receive communications.
16 July 1824 Sender: John Frederick William Herschel Reference number: HS/8/91
Autograph letter signed by sender. Sending papers published by their Academy. Will be pleased to help in any way.
29 November 1824 Sender: Mario Gemmellaro Reference number: HS/8/92
Modern translation of letter HS/8/92. Sending papers published by their Academy. Will be pleased to help in any way.
29 November 1824 Sender: Mario Gemmellaro Reference number: HS/8/92a
Copy of draft letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Is grateful for the assistance received while in Catania. Comments on the divisions of the barometer. His own barometer was undamaged after travelling 500 miles over impassible roads. Would be pleased to receive communications.
16 July 1824 Sender: John Frederick William Herschel Reference number: HS/20/184
1825
John Frederick William Herschel invents the actinometer to measure the heating power of the Sun’s rays
1825
1826
John Frederick William Herschel publishes in the Philosophical Transactions
1826:
John Frederick William Herschel publishes “On the parallax of the fixed stars”.
Autograph letter signed by sender. Has heard nothing from John Frederick William Herschel since he left the island. Would like to hear regarding the height of Etna and the latest comet.
6 March 1826 Sender: Mario Gemmellaro Reference number: HS/8/93
Modern translation of letter HS/8/93. Has heard nothing from John Frederick William Herschel since he left the island. Would like to hear regarding the height of Etna and the latest comet.
6 March 1826 Sender: Mario Gemmellaro Reference number: HS/8/93a
1827
Joseph Nicéphore Niépce presents his photographs in England for the first time
1827
Draft letter. Sends his reasons for not writing. Includes results of his readings of Etna and observations of the comet.
11 January 1827 Sender: John Frederick William Herschel Reference number: HS/8/94
Copy of draft letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Sends his reasons for not writing. Includes results of his readings of Etna and observations of the comet.
11 January 1827 Sender: John Frederick William Herschel Reference number: HS/20/244
1829
John Frederick William Herschel and Margaret Brodie Stewart are married in London
3 March 1829
1830
John Frederick William Herschel is elected Foreign correspondent of the Académie des sciences
1830
Birth of Caroline Emilia Mary Herschel, daughter of John Frederick William Herschel and Margaret Brodie Stewart
31 March 1830
John Frederick William Herschel is nominated for the presidency of the Royal Society, loses by 8 votes to the Duke of Sussex
30 November 1830
1831
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
1832
Autograph letter signed by sender. Sending three memoirs by his brother, two on Pantellaria and one on the forms of mountains. Would like a copy of John Frederick William Herschel's observations made in Sicily.
20 August 1832 Sender: Mario Gemmellaro Reference number: HS/8/95
Modern translation of letter HS/8/95. Sending three memoirs by his brother, two on Pantellaria and one on the forms of mountains. Would like a copy of John Frederick William Herschel's observations made in Sicily.
20 August 1832 Sender: Mario Gemmellaro Reference number: HS/8/95a
1833
Sir 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. Was pleased to receive John Frederick William Herschel's letter and his observations of Etna. Would like his memoir on the Nebulae of the Southern Hemisphere. Wishes him a prosperous time at the Cape. Would like some of the copper coins from Madagascar.
10 October 1833 Sender: Mario Gemmellaro Reference number: HS/8/96
Modern translation of letter HS/8/96. Was pleased to receive John Frederick William Herschel's letter and his observations of Etna. Would like his memoir on the Nebulae of the Southern Hemisphere. Wishes him a prosperous time at the Cape. Would like some of the copper coins from Madagascar.
10 October 1833 Sender: Mario Gemmellaro Reference number: HS/8/96a
1834
Birth of Margaret Louisa Herschel, daughter of John Frederick William Herschel and Margaret Brodie Stewart
1834
Autograph letter signed by sender. Hears that John Frederick William Herschel has arrived safely at the Cape and discovered two new planets already. Will shortly receive Niccolo Cacciatore. The shape of Etna has changed. His own brothers are away at the moment.
8 November 1834 Sender: Mario Gemmellaro Reference number: HS/8/97
Modern translation of letter HS/8/97. Hears that John Frederick William Herschel has arrived safely at the Cape and discovered two new planets already. Will shortly receive Niccolo Cacciatore. The shape of Etna has changed. His own brothers are away at the moment.
8 November 1834 Sender: Mario Gemmellaro Reference number: HS/8/97a
1835
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
Autograph letter signed by sender. Would like to hear of any new discoveries. Is pleased he will see John Frederick William Herschel on his way home from the Cape. Nothing happening at the moment to Etna.
7 February 1835 Sender: Mario Gemmellaro Reference number: HS/8/98
Modern translation of letter HS/8/98. Would like to hear of any new discoveries. Is pleased he will see John Frederick William Herschel on his way home from the Cape. Nothing happening at the moment to Etna.
7 February 1835 Sender: Mario Gemmellaro Reference number: HS/8/98a
Autograph letter signed by sender. Congratulations on the birth of an infant. Niccolo Cacciatore is still working with the meridian. There has been no fall of aereolites in Sicily in spite of reports in the papers.
25 March 1835 Sender: Mario Gemmellaro Reference number: HS/8/99
Modern translation of letter HS/8/99. Congratulations on the birth of an infant. Niccolo Cacciatore is still working with the meridian. There has been no fall of aereolites in Sicily in spite of reports in the papers.
25 March 1835 Sender: Mario Gemmellaro Reference number: HS/8/99a
Autograph letter signed by sender. Thanks for John Frederick William Herschel's observations and notes on nebulae. Hopes John Frederick William Herschel will come to Etna to see the changes in the crater.
19 June 1835 Sender: Mario Gemmellaro Reference number: HS/8/100
Modern translation of letter HS/8/100. Thanks for John Frederick William Herschel's observations and notes on nebulae. Hopes John Frederick William Herschel will come to Etna to see the changes in the crater.
19 June 1835 Sender: Mario Gemmellaro Reference number: HS/8/100a
Autograph letter signed by sender. Has received the printed copy of John Frederick William Herschel's observations on nebulae from Naples. Hopes John Frederick William Herschel will return to England via Sicily.
18 September 1835 Sender: Mario Gemmellaro Reference number: HS/8/101
Modern translation of letter HS/8/101. Has received the printed copy of John Frederick William Herschel's observations on nebulae from Naples. Hopes John Frederick William Herschel will return to England via Sicily.
18 September 1835 Sender: Mario Gemmellaro Reference number: HS/8/101a
1836
Birth of Alexander Stewart Herschel, son of John Frederick William Herschel and Margaret Brodie Stewart
5 February 1836
Autograph letter signed by sender. Pleased to hear of the good health of John Frederick William Herschel and family. Everyone hopes John Frederick William Herschel will make new discoveries in the physiological and anatomical fields as a result of his observations. Etna's crater is slowly changing. A fireball has been observed; also Halley's Comet as correctly predicted by Niccolo Cacciatore.
20 March 1836 Sender: Mario Gemmellaro Reference number: HS/8/102
Modern translation of letter HS/8/102. Pleased to hear of the good health of John Frederick William Herschel and family. Everyone hopes John Frederick William Herschel will make new discoveries in the physiological and anatomical fields as a result of his observations. Etna's crater is slowly changing. A fireball has been observed; also Halley's Comet as correctly predicted by Niccolo Cacciatore.
20 March 1836 Sender: Mario Gemmellaro Reference number: HS/8/102a
Autograph letter signed by sender. Discusses observations of Mt. Etna since its last eruption in 1832 and the work of geologist Teodoro Monticelli.
14 May 1836 Sender: Mario Gemmellaro Reference number: HS/8/103