42 EXPLORATION OF THE COUNTRY BETWEEN 
Tune 27. naan south wind all day, and a violent storm again from 
the NW. in the n 
June 28. salle, rainy, and nearly calm most of the day. 
June 29 and 30, and July 1, 2, 3, 4,5, 6, and 7.—Weather cool, 
eg clouded, ‘but no material rain; most of the time north wind. 
, 10, and 11.—Wind fresh from the south. 
uly 12. —Strong NE. wind, and light,thunder showers from NW. . 
Tidy 13.—At the Great Bend violent northwest wind storm, which 
blew the water out of the river in spray ; but little rain or thunder. 
July 14.—Wind strong south. (? ) 
' July 15.—Wind light; at 2 p. m., thermometer in the shade 102°; 
in the sun 107°; wet bulb 69°, wind slight northwest ; shower towards 
' night, “te the rain all evapor ated again before reaching the earth. 
6.—Clear and very warm. 
The sce observations were made on the steamboat. The observa- 
tions on the weather from July 16, to August 9, will be found in the 
table with the observations of wet and dry bulb thermometers at Fort 
The following notes on the weather soe gh the meteorological 
observations from Fort Pierre to Fort Kearny. 
ugust 9,6 a. eho uds 3; 14 p. m.,cumulus 3 ; wind northwest 
3; several thunder showers crossed the prairie in “the afternoon, mov- 
- ing to wg southeast ; much thunder and rain during the night. 
August 10, 64 a. m. —Rain ; ; clouds 9 ; calm, thermometer 664°; wet 
bulb dae te 64°; in the forenoon sun shone at intervals ; 12 m z 
_ heavy thunder shower to the east, wind at the time web eth 6 ; at # 
get ape ; 9 p. m- clouds, raining slightly ; ; wind northw 6 Bs: : 
Aug 11. i eae Hs the day clouds varying from 7, 3 to 8; wind 
aoe: from 3 to 4, eet slight wheats. 3 of rain ; 5 p. m., ther- 
rometer 61° ; ; wet bulb 5 
pales T, ia p.1 m. a Waid rte 5 ; -high prairie covered with fog i 
mist. 
rand 15.—Clouds, 3 to 5; wind northwest, 3; 64 p. m., clear 
and ca 
August 15, 74 to 10 a. m., wind “since 5; clouds, 10; ponte 
rain ; temperature of Rapid river a0; Bb ay, sun shone ; Tp. 
ifi., » nimbus clouds, 8; rainy, wind Hovtheweet, 4; temperature 14 p- 
m., 
August 16, 53 a. m., clouds ; 9}, low and flying, wind northeast, 5; 
7 p.m. , clouds, 1 : in horizon calm ; continued so nearly all night. 
August 1%, 54 a. m., slonds, 9; ; clear around the sun, wind north- 
wes cleared up as the day advanced ; m. , clouds 2; upper 
wind west, lower wind east, 4. e ae 
