118 



Report of the Kew Committee. 



Readings of radiation thermometers 848 



,, rain and evaporation gauges 1184 



Cloud and weather observations 2300 



Measurements of barograph curves . . . . , 9477 



,, dry bulb thermograph curves. . 9513 



,, wet bulb thermograph curves. . 9405 



,, wind (direction and velocity). . 18940 



,, rainfall curves 639 



„ sunshine traces 2094 



In compliance with a request made by the Meteorological Council 

 to the Kew Committee, the Observatories at Aberdeen, Armagh, 

 Falmouth, Glasgow, Oxford (Radcliffe), Stonyhurst, and Valencia, 

 have been visited as usual and their instruments inspected by Mr. 

 Whipple during his vacation. 



With the concurrence of the Meteorological Council, weekly abstracts 

 of the meteorological results have been regularly forwarded to, and 

 published by "The Times," "The Illustrated London News," and 

 " The Torquay Directory," and meteorological data have been supplied 

 to the editor of " Symons' Monthly Meteorological Magazine," the 

 Secretary of the Institute of Mining Engineers, Messrs. Anderson, 

 Buchan, Eaton, Greaves, McDonald, Rowland, Wragge, and others. 



Electrograph. — This instrument has been in continuous action 

 through the year. 



During the severe frost of last winter it was found necessary to 

 heat the water flowing through the discharge pipe by means of a 

 spirit lamp, suspended from the collector. This precaution enabled 

 the records to be maintained throughout the year, with very few in- 

 terruptions due to frost. 



In August the instrument was dismounted, and a fresh supply of 

 acid placed in the jar, the charge-keeping properties of which had 

 become slightly deteriorated. 



Some experiments have been made with a view of determining the 

 effect of the interposition of an air condenser between the collector 

 and the electrometer, in reducing the extent and rapidity of the 

 electrical changes registered by the instrument under certain atmo- 

 spheric conditions. These experiments are still in progress. 



No steps have yet been taken as to the discussion of the seven 

 years' curves now in store, but suggestions as to the means of dealing 

 with them are under consideration. 



The self-recording instruments, with their attendant photographic 

 processes and methods of tabulation, have been studied by Professor C. 

 Niven, who has succeeded the late Professor D. Thomson in the charge 

 of the Aberdeen Observatory ; by Dr. Chistoni, of the Roman Obser- 

 vatory ; and by M. Perrotint, Director of the Nice Observatory. 



