Report of the Ketv Committee. 103 



used in the reduction of the monthly absolute observations which had 

 been determined by Mr. Welsh have been re-examined. A memorandum 

 containing the results of the observations in question for the twelve 

 months ending Sept. 30, 1875, has been prepared, and is appended to 

 this Eeport ; and it is the intention of the Committee to furnish similar 

 statistics with each of their subsequent Reports. 



A paper embodying the results of absolute determinations for the six 

 years ending with March 1875 has been prepared and submitted to the 

 Society; it forms a continuation of the similar paper for the pre- 

 ceding six years, ending March 1869, which was submitted by Dr. B. 

 Stewart, and is printed in the ' Proceedings of the Society,' vol. xviii. 



The Magnetic Reductions for the current year have been kept up nearly 

 to date. As regards the arrears of work shown in the tabular statement 

 appended to the Report of the Kew Committee of the British Associa- 

 tion for 1870-71, no progress had been made in dealing with any of the ele- 

 ments (with the exception of the tabulation of the Declination curves) up 

 to the month of April last, owing to the insufficiency of the regular staff 

 to deal with such a mass of materials ; at that period, however, an extra 

 assistant was engaged to undertake the reduction of these arrears. By 

 this means good progress has been made with the first portion of this 

 work, the preparation of the " fair " and " subsidiary " tabulations for 

 the years 1871-1873. 



Magnetic data have been supplied to Sir W. Thomson, LL.D., Dr. 

 Atkinson, Capt. Ettrick Creak, R.N., Mr. Woodward, and Mr. H. A. 

 Rowland. 



The Unifilar and Dip-circle lent to the Rev. S. J. Perry for use at 

 Kerguelen Island on the Transit-of- Venus Expedition, as mentioned in 

 last Report, have been returned by that gentleman. A Unifilar lent from 

 Kew, in the year 1869, to Capt. Elagin, Imperial Russian Navy, was 

 returned by him in February of this year, and at his request the con- 

 stants were redetermined and the results forwarded to him. He has 

 left a Dip-circle at Kew to be repaired. 



Meteorological Worlc. — The several self-recording instruments for the 

 continuous registration respectively of Pressure, Temperature, Humidity, 

 Wind (Direction and Yelocity), and Rain have been maintained in regular 

 operation as usual under the care of Mr. T. W. Baker, assisted by T. 

 Grunter. The daily standard eye- observations for the control of the 

 automatic records have been made regularly. 



In addition to the regular work of Kew as one of the self-recording 

 Observatories in connexion with the Meteorological Office, the duty of 

 examining and checking the work of all the seven Observatories of the 

 same character has been carried on, in accordance with the method de- 

 scribed in the Report of the British Association for 1869. This portion 

 of the work has been performed by Messrs. Cullum, Hawkes worth, and 

 Deane. In the month of August application was made to the Observa- 



