158 



THE CLIMATIC FACTOR AS ILLUSTRATED IN ARID AMERICA. 



miles from Dillonwood, they are the nearest records of any considerable length available 

 for comparison with the growth of the sequoias at that place. The next curve is that 

 of Sanger, the meteorological station nearest to Hume, where most of our sequoias grew. If 

 we continue to mention the cm'ves in the order of geographical location, the next should 

 be the one for Fresno, which is here plotted at the top. Since the record for Fresno goes 

 back to 1881-82 while that for Sanger goes only to 1889-90, and since Fresno is onty a little 

 more distant from Hume than is Sanger, Fresno has been chosen for comparison with the 



Fresno.altitude 

 A 293 ft. mean 

 rainfall 10.02 in. 



Bakersfield 

 B altitude 394 ft. 

 mean rainfall 5.17 in. 



PorterviUe, 

 -C altitude 464 ft. 

 mean rainfall 1001 in. 

 Tulare.altitudc 

 D 274 ft, mean 



rainfall 8.87 in. 

 Sanger. Fresno Co. 

 altitude 371 ft. 

 mean i-ainfall 10.68 in. 



Stockton, altitude 

 15 ^F 23 ft. mean 



ramfall 14.63 in. 

 lOl 



San Francisco. 

 G altitude 207 ft., mean 



rainfall 22.83 in. 

 25" 



Mean of Monterey. 

 H Stockton, Santa Barbara. 



and San Francisco 

 55 



Mokelumne Hill, 



Calaveras Co.. alt. 



1550 ft., mean 



rainfall 32.52 in. 



Milo, Tulare Co.. 



■J altitude 1600 ft., mean 



rainfall 23.84 in. 



Crockers, 



Tuolumne Cn,. 



K altitude M2S ft. 



mean ramta^i 



49 47 in. 



Fig. 40.— Annual Rainfall at Selected Stations in California. 



growth of the trees at Hume. Northwest of Fresno, at a distance of 120 miles, Stockton 

 lies in the Great Valley on the way to San Francisco. Its curve of precipitation goes back 

 to 1867-68. It is chiefly important as a meteorological way-station between the sequoias 

 and San Francisco. The next curve and all those below it are extremely jagged; for, 

 although the rainfall of the places represented in the later curves ranges from 20 to 55 



