Report of the Kew Observatory Committee. 167 



Number tested in the year 

 ending December 31. 



1896. ~~1897? 



Air-meters 5 5 



Anemometers 12 



Aneroids .... 113 77 



Artificial horizons. . . . s 21 17 



Barometers, Marine 84 167 



Standard 72 101 



Station 40 30 



Binoculars 455 661 



Compasses 51 



Deflectors 4 



Hydrometers 374 292 



Inclinometers 8 5 



Photographic Lenses 14 10 



Magnets 4 2 



Navy Telescopes 546 707 



Rain Gauges 17 27 



Rain Measuring Glasses 26 31 



Scales 1 



Sextants 591 694 



Sunshine Recorders 2 10 



Theodolites 5 29 



Thermometers, Avitreous, or Immiscli's 7 5 



Clinical 13,772 17,270 



Deep sea 74 119 



High Range 52 37 



,, Hypsometric 34 30 



Low Range 62 71 



Meteorological 4,098 2,874 



Solar radiation 2 



Standard 69 117 



Unifilars 3 4 



Vertical Force Instruments 4 



Declinometers . 3 



Total. 20,566 23,457 



Duplicate copies of corrections have been supplied in 85 cases. 

 The number of instruments rejected in 1896 and 1897 on account 

 of excessive error or for other reasons was as follows : 



