ae ss 
Climatology of the United States. 237 
' _ 1. In latitude 33°, within 150 miles of the Pacific coast, is a 
district whose mean temperature during the three months of 
summer is 90°. This is shown by the observations at Fort Yuma. _ 
‘ort Yuma is situated on the west bank of the Great Colorado, 
eighty miles from the Gulf of California in latitude 82° 43’, and 
longitude 114° 36’, The locality-is a rocky bluff, 75 feet above 
the river, and 120 feet above the sea, with sand hills and rocky 
bluffs bordering the wide valley, and connecting with an immense 
sand desert on the west. The following are the results of three 
years observations. 
Mean temperature of Mean of bila adl , 
| June. | July. | August. | Sept. rime og tempture, 
1852 | 87°00 88°65| 88:10| 8355 87°92 108 
1853 at 94°12] 92:16} 89:33] gi-g2 | 121 
1854 8 40} 94:05} go 62! 85:48} goo2 | 113 
Mean | 87:29 92:27; 90:29! 86 12| 8995 | 
From no other station on the American continent do we find observa- 
y ns indicating a mean temperature for summer so high by more than 
v0 degrees, On the Eastern continent a few instances of higher 
Saye 
ss and among these the following are the only instances 
Which furnish a mean summer temperature as high as 90°. 
Mean temperature of ls Summei|No. ‘of 
La . * aC ae RT SPY ay ah a . 
. se titude, Longitude. Pree | Toh: August | Sept. | months. (years 
. ° ° Yd 
: Bandichery, ov 1156 N. 79. 52E, 96 40 93°80 92°00 | 89°50, 9373 | 4 
Cnet tt 33 21.) 44 22 | 92:08! 93-20! 94:10 87-35) 93-13 v 
i Egypt, ...| 26 ow.| 33 40 | 9050) 9444| gt-06| 8656) gr02 | 1 
ae te ey. 28 15N.| 50 54 | 8978! 9374] 92°48) 8852) gor | 1 
a oe 36 19 N.| 43 10 87°10 | 94:10} 90°64 | 80-98 gob 7 
_At each of these stations the observations embrace only a 
: one year, and it is not improbable that the results 
is ¢. t place at present known on the Western continent, and 
ata by only a very small portion of the Eastern con- 
4 ee @ mean temperature of the coast of California Poe 
ger, is about twenty degrees colder than at places 100 miles 
the f interior upon the same parallel. This will appear from 
lowing comparison, 
