, 
“phen bs ge Figgas 2c se a oa a 
H. Gibbons on Springs and Streams in California. 189 
June 20—sun 15h., night 9h.; or as 10: 6. 
duly. 20— *. 14h 10h : 
Oct. 20— “ lih, “ 13h.;  “ 1021182. 
Nov.20— “ 10h, “ 14h; “ 10:14. 
But this exhibits only the space of time occupied by the evap- 
orating process. The greatly diminished power of the sun’s 
Tays in the autumnal months enhances the effect very materially. 
Besides, it is quite possible that, in the longest days, when the 
soil is most heated, a portion of the water in the strata supply- 
ing the springs is drawn directly upward by capillary attraction. 
This would be an additional source of exhaustion, which woul 
cease or diminish with the advance of the season. 
have rains sufficient to penetrate a foot into the soil before 
Water, and perhaps in the course of the bed other pools will be 
wa 
found, where a good supply of water is always on and in the 
