1903] FLORA OF SOUTHERN CALIFORNIA 211 
of 32.25 (819™™) in 1869 may be compared with that of 
4.83'" (122™™) in 1898. In the desert region the rainfall is 
always very small, and in average seasons is greatly exceeded 
by that of the cismontane region, but years of extreme drought 
have occurred in which the difference was less marked. 
The appended table exhibits the normal amount of precipita- 
tion at places whose records extend over a period of more than 
fifteen years. The average for the three intramontane stations 
is 14.95 ™ (380™™), or about five times that of the desert station. 
NORMAL PRECIPITATION. 
MONTHLY PRECIPITATION YEARLY 
EARL’ 
ALTITUDE PRECIPITATION 
YEARS 
STATIONS OF Least Greatest 
RECORD 
Feet | Meters In, | Mm, 
Los Angeles.....) 270 | 84.1] 21 i a % 4.0 | 102 18.1 | 460 
ae DESO 6.5 3 Tr 3.6) 42 OuI 25 25% 53 9.8 | 249 
San Bernardino ../ 1,075 | 327.6| 29 O65 | 7.6" | 3.6 gi E701 432 
Lo ree T40.| 42.7| 16 i i) 0.6 15 32 77 
Nearly as great a disparity exists between the rainfall of the 
intramontane and the Nevadan regions, but data from the latter 
are few and not easily obtained. A partial means of compari- 
son is afforded by the following table. The seasons are from 
July to June. The distance of the two stations in an air-line is 
about 12 miles (20*™); the difference of altitude is 4,075" 
(1,242 sl 2 
PRECIPITATION FOR SIX SEASONS, 1893-94 TO 1898-99. 
PRECIPITATION 
ALTITUDE 
STATIONS Greatest Least Mean 
Feet | Meters hs tia. Tai. Mn. In, Mm. 
-San Bernardino ....... 1,075| 328 |20.98| 533 | 7-49| 190 | 11.61} 295 
Little Bear Valley*5.....| 5,150] 1,570 | 60.61 1,542 |19-79| 502 | 33-08] 840 
The rainfall at the mountain station is nearly three times 
4 Dr, A. K. Johnson’s record. 15 Arrowhead Reservoir Co.’s record. 
