80 



REPORT — 1902. 



In tlie cases marked * records from Bicliard Frires' iustriimeuts were obtained, in the others tlie 

 temperature at the highest point only. 



For the period extending from July 8 to August 22 a steam-tug was 

 obtained, and the apparatus mounted on the deck. This arrangement was 

 found to give much more effective control over the experiments, and 

 rendered possible observations in light winds that would not have lifted 

 the kites on land. The observations will be discussed and the results pre- 

 pared for publication in the course of the ensuing year. 



in. 



The Committee consider that the work which has been completed is 

 amply sufficient to show that the apparatus and methods are effective for 

 securing valuable information as to the upper air in various conditions of 

 weather. There are some points in whicli it seems desirable to attempt 

 to improve the recording apparatus in order that the readings may be 

 more definitely checked, and the Committee think it desirable for the 

 experiments to be continued for another year, during which it may be 

 possible to so arrange the flights as to obtain precise information regarding 

 the distribution of temperature and humidity in specific conditions of 

 weather in oi'der to examine the physical processes taking place in the 

 upper air corresponding to weather changes noted at the surface. 



The kites and apparatus for winding in, with such modifications as 

 experience has suggested, but with little additional cost, will be available, 

 but it is of great importance to be able to employ a tug, in order that the 

 investigation of the upper air may not be entirely dependent upon windy 

 weather. 



The Committee therefore ask for reappointment, with the addition of 

 the names of Dr. Glazebrook and Professor Schuster, and a grant of 100/, 



