| Description | Summary of instruments and their use at the Singapore Magnetic Observatory, commencing: 'As there are several instruments now used connected with the Observatory that are of recent adoption, it may be as well to say a few words in regard to them...'.
Headed [p.1]: An additional memo. to the General Abstracts for September 1843'. Signed [p.3]: 'C.M. Elliot Lieut. Engrs. Superintd. Magc. Obsy'. |