This letter was an acknowledgement for sending pump and bell jar. Evershed mentioned about getting the beautiful series of plates of the Spectrum of the iron arc in air and the centre of Sun's disk. He has written about reproduction of prominence photos the sample of work done by the Roorkee Coy., is suitable the screen used being very fine.

The letter was a request to send weekly note to Calcutta containing meteorological determination from the wireless signal in the same form as Calcutta wires to the meteorological department, Madras.

This a letter of enquiry regarding sending of lenses located at Nizamiah Observatory could be sent to Evershed. It also encloses a copy of Pocock's letter where description about the lenses are mentioned.

This letter was with reference to the telegram where mean areas giving better gauge of prominence activity than mean extent are discussed. It also encloses a table of mean areas from 1890 to 1921.

The letter was about discussion on Schwarzehildd calculation for gravitational field round a small particle.

The letter informs about the visit of Mr. Seshachar to the Kodaikanal Observatory during January and February of 1921. The Director General of Observatories asked Thomas Royds to make proper arrangements for the visitor. The visit of Evreshed to Lahore for the adjustment of specific astronomical instruments in the Observatory has also been mentioned.

This was a reply letter from John Evershed, past Director of Kodaikanal and Madras Observatories, to the Director General of Observatories, Simla requesting to transfer the salary of Thomas Royds from Kodaikanal Sub-Treasury to Madras Treasury. It was written in the year 1914.

The letter contains details about Thomas Royds' enrollment in the Indian Army Officers Reserve.

The office order was about the temporary promotion of Thomas Royds and A. A. Narayana Ayyar. Due to the absence of John Evershed, Director of Solar Physics Observatory, Kodaikanal, The Assistant Director, Thomas Royds, was appointed as Acting Director, and The first Assistant, A. A. Narayana Ayyar, as The Acting Assistant Director. The order was sent from Simla in 1920.

The item is a letter written by Charles P. Butler, Ag. Director of Kodaikanal and Madras Observatories to John Eliot, the Meteorological Reporter to the Government of India and Director General of Indian Observatories, Simla, in 1903. The letter inquires about sending a personal copy of the administration report to M. Compte de la Baume Pluvinel, who was one of the distinguished astronomical spectroscopists.