Search: Maclear, Thomas in addressee 
Herschel, John in author 
Herschel, John in correspondent 
letter in document-type 
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Showing 101–120 of 161 items

Herschel3919

From:
Sir John Herschel
To:
Thomas Maclear
Date:
31] December [1835
Source of text:
unknown
Summary:

Is TM planning to go to Paarl?

Contributor:
John Herschel Project

Herschel3920

From:
Sir John Herschel
To:
Thomas Maclear
Date:
8] January [1836
Source of text:
unknown
Summary:

Uncertain when they are traveling to Paarl.

Contributor:
John Herschel Project

Herschel3921

From:
Sir John Herschel
To:
Thomas Maclear
Date:
25] January [1836
Source of text:
unknown
Summary:

Invites TM to come see Halley's Comet in JH's large reflector. JH reports his observations of the comet.

Contributor:
John Herschel Project

Herschel3922

From:
Sir John Herschel
To:
Thomas Maclear
Date:
[8 February 1836]
Source of text:
unknown
Summary:

Calculates the location of the comet [Halley's].

Contributor:
John Herschel Project

Herschel3923

From:
Sir John Herschel
To:
Thomas Maclear
Date:
[3 March 1836]
Source of text:
unknown
Summary:

Comments concerning Francis Baily's book on John Flamsteed.

Contributor:
John Herschel Project

Herschel3924

From:
Sir John Herschel
To:
Thomas Maclear
Date:
1836-3-5/6
Source of text:
unknown
Summary:

Calculates the location of [Halley's] comet.

Contributor:
John Herschel Project

Herschel3925

From:
Sir John Herschel
To:
Thomas Maclear
Date:
[1836-3-10/11]
Source of text:
unknown
Summary:

Star within 20 seconds of the nucleus of the comet [Halley's].

Contributor:
John Herschel Project

Herschel3926

From:
Sir John Herschel
To:
Thomas Maclear
Date:
[2 April 1836]
Source of text:
unknown
Summary:

Arranges to have tea with TM tomorrow at the Royal Observatory.

Contributor:
John Herschel Project

Herschel3927

From:
Sir John Herschel
To:
Thomas Maclear
Date:
[10 May 1836]
Source of text:
C: RS:HS 21.206 inc
Summary:

Asks TM to accompany himself and Daniel Cloetes in hunting a leopard.

Contributor:
John Herschel Project

Herschel3928

From:
Sir John Herschel
To:
Thomas Maclear
Date:
[24 May 1836]
Source of text:
unknown
Summary:

Does not want to compute precessions for each individual star.

Contributor:
John Herschel Project

Herschel3929

From:
Sir John Herschel
To:
Thomas Maclear
Date:
[19 July 1836]
Source of text:
unknown
Summary:

Notes a discrepancy in TM's latest observations and those of Thomas Brisbane.

Contributor:
John Herschel Project

Herschel3930

From:
Sir John Herschel
To:
Thomas Maclear
Date:
25] July [1836
Source of text:
unknown
Summary:

Congratulates TM on the birth of his son, George.

Contributor:
John Herschel Project

Herschel3931

From:
Sir John Herschel
To:
Thomas Maclear
Date:
[26 August 1836]
Source of text:
unknown
Summary:

Inquires about a star not found in TM's list of comet stars. Believes that their comet collaboration is going well.

Contributor:
John Herschel Project

Herschel3933

From:
Sir John Herschel
To:
Thomas Maclear
Date:
8] September [1836
Source of text:
unknown
Summary:

Discusses their table of comet stars.

Contributor:
John Herschel Project

Herschel3934

From:
Sir John Herschel
To:
Thomas Maclear
Date:
28] September [1836
Source of text:
unknown
Summary:

Wants to reset his barometer by TM's.

Contributor:
John Herschel Project

Herschel3935

From:
Sir John Herschel
To:
Thomas Maclear
Date:
12] October [1836
Source of text:
unknown
Summary:

Compares JH's and TM's barometric readings. Criticizes Pierre Morin's work.

Contributor:
John Herschel Project

Herschel3937

From:
Sir John Herschel
To:
Thomas Maclear
Date:
[17 December 1836]
Source of text:
unknown
Summary:

Setting a unit of measurement for solar radiation (the 'actine'); proposes to 'take for a unit of solar heat that which if all employed in heating a cubic inch of water exposing a horizontal surface of one square inch, to a vertical Sun during one minute would produce a dilation of one thousandth part of its volume.'

Contributor:
John Herschel Project

Herschel3938

From:
Sir John Herschel
To:
Thomas Maclear
Date:
20] December [1836
Source of text:
unknown
Summary:

Testing whether an actinometer with a glass back is more accurate than one without.

Contributor:
John Herschel Project

Herschel3939

From:
Sir John Herschel
To:
Thomas Maclear
Date:
[30 October 1850]
Source of text:
Cape Archives/Maclear Papers File 100
Summary:

Returns from vacation in France. Offers to be a trustee for the Cape Observatory. J. R. Hind has discovered asteroid Victoria.

Contributor:
John Herschel Project

Herschel3940

From:
Sir John Herschel
To:
Thomas Maclear
Date:
15] February [1837
Source of text:
unknown
Summary:

Notes discrepancies between TM's and Thomas Brisbane's observations.

Contributor:
John Herschel Project
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