174 EXPLORATIONS ACROSS THE GREAT BASIN OF UTAH. 



No. I was deduced from 23 days' hourly observations taken at Fort Leaven- 

 worth, Kans., from May 3 to 26, 1858, at an elevation of near 900 feet above the 

 level of the sea. The mean temperature during that time was 59° Fahrenheit, the 

 weather rainy and stormy. The hourly variations were often obliterated by the ab- 

 normal changes, and the amplitude of the diagram is, therefore, comparatively small; 

 it corresponds very nearly with that for the same month at Philadelphia. 



No. II was deduced from observations taken at Fort Kearney, Nebr., from June 

 19 to July 1, 1858, at an elevation of 2,200 feet above the level of the sea. The 

 mean temperature was 7 7°. 5, the weather mostly fine, with the exception of some 

 rains and high winds. Great abnormal variations took place during this interval, but 

 I found that they did not change much the mean result. Therefore I eliminated only 

 one very irregular day, and calculated the table from the remaining 11 days, after cor- 

 recting a few obvious irregularities. The values thus obtained are very satisfactory. 



No. Ill was deduced from 4 days' observations taken at Fort Laramie, Nebr., 

 from July 30 to August 1, 1858, at an elevation of about 4,470 feet above the level 

 of the sea, and with a mean temperature of 67°. The weather was rather favorable. 

 The diagram has a marked sweeping shape. 



No. IV was deduced from observations taken at Fort Bridger, Utah, from Sep- 

 tember 28 to October 7, 1858, at an elevation of 6,656 feet above the level of the sea, 

 The weather turned out so stormy, and the variations so irregular, that I had to reject 

 all observations made after the first 2 days, which have a mean temperature of 57°. 



No. V was deduced from observations taken at Camp Floyd, Utah, at an eleva- 

 tion of 4,860 feet above the level of the sea, from April 4 to 23, 1859. The mean air 

 temperature was 42°, and the weather mostly cloudy, stormy, and rainy. The ampli- 

 tude is, therefore, rather small. 



No. Va. A more graceful « 

 only the first 3 days of No. V, 



for the intermei 



them by a curv 



No. IX wa 



am ; 



md of largei 



r amplitude was 



obtained from 



Apr 



il 5 to 8, 18£ 



,9, with a mean 



temperature of 



tays' 



observations 



taken at Camp 



. Floyd, Utah, 



m te 



mperature w 



r as about 70°, and the weather 



>n of 



some high winds. 





lays' 



hourly obse 



rvations taken at 



; Camp Floyd, 



9, 1* 



*58. The m 



can temperature 



was about 35°, 



lorma 



1 variations 



took place. Tl: 



lese results are, 



S 



m shows a 1 

 cs' tri-hourh 



bold, sweeping si 



; Camp Floyd, 



Foul' 



th Artillery; 



from September 



22 to October 



ras 5 



7°, the weather partly storm; 



jr. The values 



d In- 



plotting the 



calculated ones, 



and combining 



to (•( 



>rrespond to 



the other diagrar 



ns. 





j observatioi 



is taken at Cam 



p Floyd, Utah, 



■ mei 



m temperatv 



ire was 35°, the 



weather mostly 



>noal 





ook place, and « 



jome snow fell. 



irude is, therefore. 



