

Report of the Kew Committee. 309 



new one was obtained from Adie, London, and fitted to the 

 Cylinder on July 5. 



On August 10 the clock was dismounted and cleaned 



As regards Magnetic Disturbances, no very large movements have 



en registered during the year. The principal oscillations that were 



corded took place on the following days : 



February 45, March 1415, April 26, June 1819, July 16, 



.ugust 6 7 and 18, November 1 2. 



The hourly means and diurnal range of the magnetic elements for 

 '3, for the quiet days selected by the Astronomer Royal, will be 

 'ound in Appendix I. 



The following are the mean results for the entire year : 



Mean Westerly Declination 17 28'"8 



Mean Horizontal Force 0' 18238 C.G.S. units. 



Mean Inclination 67 26''3 



Mean Vertical Force 0'43896 C.G.S. units. 



The observations of Horizontal Force, Inclination, and Declination 

 with the absolute instruments have been made in accordance with the 

 usual practice. 



Captain Schiick visited the Observatory in July, and made a series 

 of absolute magnetic observations in order to compare his own in- 

 struments with those of Kew, prior to his continuing his magnetic 

 survey on the banks of the Elbe. 



The temperature coefficients of the magnets employed by Captain 

 Schiick were determined at Kew. 



The magnetic instruments have been studied and a knowledge of 

 their manipulation obtained by Lieutenants Parry and Tancred, of 

 the Royal Navy, who visited the Observatory from December 4 to 

 December 20. 



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 

 notes of weather, cloud, and sunshine, have been transmitted, as usaal, 

 to the Meteorological Office. 



