Report of the Kew Committee. 



325 



The following are the principal results of the magnetic elements for 

 the year 1892 :— 



Mean Westerly Declination 17° 36'7 



Mean Horizontal Force 18202 C.G.S. unit. 



Mean Inclination 67° 29' *4 



Mean Vertical Force 0'43919 C.G.S. unit. 



Additional observations of the Horizontal Force, Inclination, and 

 Declination have been made each month with the absolute instru- 

 ments, for the purpose of determining with greater precision the zero 

 values of the magnetograph curves. 



Information on matters relating to various magnetic data has 

 been supplied to Lord Kelvin, P. U.S., Professor Riicker, Dr. 

 Neumayer, Captain Schiick, and Dr. Atkinson. 



Lieutenant C. E. Monro, of H.M.S. "Penguin," visited the Ob- 

 servatory from November 11 to 22, in order to gain a knowledge of 

 the use of the unifilar magnetometer and the method of observing and 

 reducing the observations. 



Mr. E. Kitto, Superintendent of the Falmouth Observatory, again 

 spent a fortnight at Kew, in the spring, preparing for the reduction, 

 upon the International scheme, of the magnetic observations made at 

 that Observatory. 



From time to time Messrs. Gray and Watson have visited the 

 Observatory for the purpose of taking a series of absolute magnetic 

 observations with the instruments which have been employed under 

 the direction of Professors Riicker and Thorpe in their magnetic 

 survey of the British Isles. 



A glass scale graduated in millimetres for measuring magnetic 

 curves was constructed for Professor W. G. Adams. 



A number of Thomson compass deflectors by J. White, of Glasgow, 

 have been examined, the examination being conducted at the Observa- 

 tory by Mr. Baker, acting upon suggestions made by Captain 

 Creak. 



II. Meteorological Observations. 



The several self-recording instruments for the continuous registra- 

 tion respectively of Atmospheric Pressure, Temperature of Air and 

 Wet-bulb, Wind (direction and velocity), Bright Sunshine, and Rain, 

 have been maintained in regular operation throughout the year, and 

 the standard eye observations for the control of the automatic records 

 duly registered. 



The tabulations of the meteorological traces have been regularly 

 made, and these, as well as copies of the eye observations, with 



