This letter is from Gilbert T. Walker to Charles Michie Smith, thanking him for the copy of Rowland's map and calling his attention to the error at the daily weather summary. He also informs that there is no objection to paying the photographer by piecework, and Lockyer needs the photo heliograms only to measure areas.

This letter was sent to Charles Michie Smith from Gilbert T. Walker who was glad to pressed Slit Machine at once instead of indenting for it later on

This is a letter from Gilbert T. Walker to the Director of Kodaikanal and Madras observatories informing despatch of drum by post and a request for acknowledgement.

This is a letter from Gilbert T. Walker to Charles Michie Smith informing that there might be difficulty in getting clocks from the mathematical instrument department.

This is a reply letter from Gilbert T. Walker to the Director of Solar Physics observatory, Kodaikanal requesting for a special indent for the requests of clocks in the above letter. He also asks for precise details about the required clocks.

This is a letter from Gilbert T. Walker to Charles Michie Smith stating the inadequacy of the single clock at Madras for the time service. This letter asks for a detailed proposal for supplying the deficiency of clocks.

The letter is from Gilbert T. Walker to Charles Michie Smith discussing about the enlargement of photos, the orientation of spectroheliograph, scientific instruments, and the sending of 'sun pictures' plates to Christie.

The letter is from Gilbert T Walker, Meteorological reporter of the government of India and Director General of Indian observatories, to Charles Michie Smith, Director of Solar Physics Observatory, discussing putting new piers, suggesting that the widening of doors may require big structural change. Hence, it might be given up. And about spectrum photography with the spectroheliograph.

The letter is from Gilbert T. Walker to D. W. K. Barr informing that Michie Smith will examine the new telescope as soon as possible and his opinions are fully reliable.

This letter was reply to the questions contained in the letter dated July, 1906, from Prof. Schuster on behalf of the International Union for Solar Research.