Search: Herschel, John in correspondent 
Warner, Thomas in correspondent 
1860-1869::1869::07 in date 
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Herschel13559

From:
Sir John Herschel
To:
Thomas Warner
Date:
[7 July 1869]
Source of text:
'Preface to Improved Edition' of Thomas Warner, How To Keep the Clock Right (187
Summary:

Received TW's book and approves simplicity and economy of its method of keeping time by using small fixed telescope to reduce star observations. Disapproves of using 'Dominical Letters.' Suggests using Julian dates.

Contributor:
John Herschel Project

Herschel7888

From:
Thomas Warner
To:
Sir John Herschel
Date:
[1869-7-7 or earlier
Source of text:
RS:HS 18.91
Summary:

Please review TW's enclosed new book on civil time-keeping: How to Keep the Clock Right. [JH annotation: Answered 7 July.]

Contributor:
John Herschel Project
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