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1830-1839 in date 
Ross, James Clark in author 
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From:
James Clark Ross
To:
Sir John Herschel
Date:
[28 March 1839]
Source of text:
TxU:H/M-0461; Reel 1093
Summary:

Admiralty assigned Erebus and Terror to Antarctic expedition. Asks JH and Lord Northampton to request approval from Treasury for procurement of scientific instruments. Wants to consult with JH soon.

Contributor:
John Herschel Project
From:
James Clark Ross
To:
Sir John Herschel
Date:
[30 March 1839]
Source of text:
TxU:H/M-0462; Reel 1093
Summary:

Wants to order three complete sets of magnetic and meteorological instruments for observations at St. Helena, at Cape of Good Hope, and aboard expedition ships. Admiralty cannot furnish instruments. Asks JH to continue efforts to obtain authorization from Treasury.

Contributor:
John Herschel Project
From:
James Clark Ross
To:
James Clerk Ross
Date:
3 July 1839
Source of text:
MM/11/140, Royal Society
Summary:

No summary available.

Contributor:
Royal Society
From:
James Clark Ross
To:
Sir John Herschel
Date:
[31 July 1839]
Source of text:
TxU:H/M-0463; Reel 1093
Summary:

Preparations for departure prevented JR from dining with JH at Slough. Working on pendulum with Edward Sabine. Thanks JH for sending gimbals.

Contributor:
John Herschel Project
From:
James Clark Ross
To:
Sir John Herschel
Date:
[10 August 1839]
Source of text:
RS:HS 14.427
Summary:

Saturday the 17th will be convenient because it gives him time to finish his pendulum experiments.

Contributor:
John Herschel Project