The letter is from Antoine Rene deChazal, Executive engineer, Madura Division, to the Director, Kodaikanal Observatory, saying that expensive grates than the designed may not be required and if a different design is necessary, then there will be a need to obtain orders on it.

This letter informs that the Director had delivered on the 17th instant a case of a barograph daily and also mentioned the weekly barograph was brought into use on 8th December

This letter informs that a weekly barograph had been sent to the Kodaikanal and Madras Observatories address by rail, and also the Director General of Observatories was told to take delivery of the package from the Kodaikanal railway station

This letter informing that a grass minimum thermometer by J. Hicks was brought into use on the 1st instant in place of another one which was found broken on the previous morning

This letter was conveying Dr.M. K. Vainu Bappu to congratulating him on the government's decision to award him the Shanti Swarup Bhatnagar Prize for his contributions to physical sciences in 1970.

This letter was about the reply to an earlier question of Walker on the issues of heating room and the convection current.

The letter is from William Foster, registrar and superintendent of records, to the Secretary to the Government of India Department of Revenue and Agriculture regarding changes in address. It is to inform that the Solar Physics Observatory, formerly at South Kensington, was moved to Cambridge, and future communications and parcels should be sent to the new address.

The letter was written by William Butler, the Director General of Stores to the Director of Kodaikanal and Madras Observatories, Kodaikanal, on the shipping of photographic plates from the Meteorological Department as per the request. The list with the number of materials being delivered is mentioned in the document.

The item is a letter from William Butler to the Director of Kodaikanal and Madras Observatories, Kodaikanal related to the supply of Imperial ordinary plates as requested by the Director of Kodaikanal and Madras Observatories. It is mentioning that that six dozen 5*4 plates were supplied by Messrs. Houghton and Company.

The document is a letter from William Butler, Director General of Stores, to the Director of Kodaikanal and Madras Observatories, Kodaikanal, informing that imperial latern plates required by the Kodaikanal Observatory have been ordered. The product was ordered from Imperial Dry Plate Company, London. The specifications and the quantity of the plates are also mentioned in the letter.