From:
Warren de La Rue
To:
Sir John Herschel
Date:
[24 September 1864]
Source of text:
RS:HS 6.160
Summary:
Has just returned from a short tour of Russia. Visited Pulkowa and Nijny Novgorod. Had difficulties with couriers. JH's suggestion for a rotating disc with slit to reduce sunlight sounds feasible. Weather was unsuitable at Pulkowa for any observations.
Contributor:
John Herschel Project