332 



EXPEDITION TO POINT BAKROW, ALASKA. 



Precipitation I.uiiifall or melted situir, m i 



* Not measured. 



SOLAR RADIATION. 



Observations on solar radiation were made with a pair of maximum thermometers, one black and 

 one bright bulbed, in vacua, exposed horizontally on a post 4 feet high on the knoll southwest of 

 the station. They were mounted side by side in a movable frame so that they could be brought 

 into the house in stormy weather. These thermometers were exposed for a short time on Novem- 

 ber 13 and 14, 1882, just before the departure of the sun, but the latter was too near the horizon to 

 produce any sensible eifect. i.)n the return of the sun, January 29, 1883, they were exposed every 

 day not stormy from sunrise to sunset, the indices being set and read at sunrise and read again 

 at sunset, till February 19, and about midnight, Washington time, until May 14th, when, the sun 

 being continually above the horizon, they were set at local midnight and read at Washington mid- 

 night. This was continued till the closiug of the station. 



Statement allowing the solar radiation at Uglaamie from February, 1883, to August, 1883. 



[A pair of maximum thermometers, one black and one bright bulbed, exposed for solar radiation. Washington time. Correction to reduce 



to meau local time, 5 b . 17 m .] m 



* Not exposed. 



