Letter, from James Thomas Walker to Sir John Herschel, dated at 1 Cromwell Road, South Kensington

Reference number: HS/18/17

Date: 15 December 1864

Description

Autograph letter signed by sender. Indian Triangulation chart showed progress to May 1862. Explains why arcs of meridians and parallels were chosen over diagonal braces. G. B. Airy's method of determining errors helped. Will take note and package from Maria [Herschel] to John Frederick William Herschel's son John.

Reference number: HS/18/17
Earliest possible date: 15 December 1864
Page extent: 5 pages
Format: Manuscript
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Creator name

James Thomas Walker

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Citation

James Thomas Walker, Letter, from James Thomas Walker to Sir John Herschel, dated at 1 Cromwell Road, South Kensington, 15 December 1864, HS/18/17, The Royal Society Archives, London, https://makingscience.royalsociety.org/items/hs_18_17/letter-from-james-thomas-walker-to-sir-john-herschel-dated-at-1-cromwell-road-south-kensington, accessed on 07 March 2026

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https://makingscience.royalsociety.org/items/hs_18_17/letter-from-james-thomas-walker-to-sir-john-herschel-dated-at-1-cromwell-road-south-kensington

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Hierarchy

This item is part of:

Correspondence of Sir John Frederick William Herschel
1812-1870 Creator: John Frederick William Herschel Reference number: HS
Correspondence of John Frederick William Herschel: volume 18 Wackerbarth-Zucchini
1815-1870 Reference number: HS/18

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James Thomas Walker
Creator
John Frederick William Herschel
Recipient

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Herschel Letters

This collection of nearly 10,900 letters, drafts, copies and notes is the largest repository of scientific correspondence from and to Sir John Herschel, leading figure of Victorian science.

Dates: 1807 - 1875

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