This is a completion certificate for the north dome of the observatory

This is a circular letter from A.G. Cardew, AG Secretary to Government, regarding adopting standard time for railways and telegraph offices. The standard time in India will be 5.30 hours ahead of Greenwich Mean Time and 9 minutes ahead of Madras time. In Burma, it will be 6.30 hours ahead of Greenwich Mean Time and 5 minutes and 23 seconds earlier than Rangoon time. The change will be introduced at midnight between June 30 and July 1, 1905.

The letter was written by E. C. J. Bond who was the officer in-charge No. 18 party (Magnetic), Survey of India to the Director of the Madras and Kodaiknal Observatories, Kodaikanal. He was asking the director to set up the necessary procedures to collect various deflections from the magnetograph in Kodaikanal, including visual and photographic deflections.

A thanksgiving letter to Simpson for the data of a) Black bulb for the year, b) minimum on rass for year, c) sunshine January to April

This is a reply letter to T. Royds stating the length and width of the morse tape required for chronograph

This is a reply letter to the previous one for agreeing to send the Dehra Zenith sector which is not in use so anytime they can send and this also mentioned no need to send a man for packaging

This is a reply letter to the Director from Gilbert Walker with reference to the previous letter. It was mentioned that the sunshine recorder should be firmly fixed so that it will not be accidentally thrown out of adjustment.

This reply letter mentions that the reflected ray is deviated approximately 1 degree when the Nephoscope was rotated

A reply letter from the Director mentioning the impossibility of fixing the sunshine recorder satisfactorily on the pier which was built for it. He also mentioned he will build a larger pier in a new and better site and will cement it in place as suggested

In this correspondence list principal astronomical instruments to the Madras Observatory and for Kodaikanal Observatory are mentioned