NO. 4 SOLAR RADIATION ABBOT, FOWLE, AND ALDRICH 



51 



ALTITUDES OF BALLOON, DETERMINED FROM THEODOLITE READINGS 

 AT TWO STATIONS, JULY II, 1914, A. M. 



Time 

 a. m. 



10:30.3 



10:32 



10:33 

 10:34 



10:35 

 10:36 



10:37 

 10:38 

 IO.39 

 10:40 

 10:41 

 10:42 

 10:43 

 10:44 

 10:45 

 10:46 

 10:47 

 10:48 

 10:49 



10 -.50 



10:51 

 10:52 



10:53 

 10:54 



IO:55 

 10:56 

 10:57 

 10:58 

 10:59 



11 :oo 



11 :oi 

 11 :02 

 11:03 

 11:04 



11:05 



p. m. 

 12:17.7 



Altitude 



312 



720 

 I,0l6 

 1,286 

 1,392 

 I,6o6 

 1,760 

 1,900 

 2,022 

 2,l66 

 2.280 

 2,424 

 2,585 



2,688 



3,178 



3,358 

 3,568 

 3,7i8 

 3,876 

 3,970 

 4,159 

 4,270 

 4,528 

 4,682 

 4,950 

 5,052 

 5,122 

 5,218 

 5,538 

 5492 

 5,825 

 6,122 

 6,006 



Remarks 



Balloon launched. 



Balloon disappeared from view of 

 observers at Creighton College. 

 Balloon burst. 



CALIBRATION OF THE BAROMETRIC RECORD OF 

 JULY 11, 1914 



This record is marred by the sticking- of the aluminum arm at 

 middle deflections, both in rising and falling flight. Fortunately the 

 arm appears to have been free at maximum elevation, as shown by 

 the perfectly normal inflection of the record at precisely the time when 



