204 EXPLORATIONS ACROSS THE GREAT BASIN OF UTAH. 



very rapid sinking of the temperature at that honr. The mean force, although smal 



if compared to Philadelphia, was considerably larger, 0.238 inch, and the amplitud 



amplitude reached only 0.042 incli. Similar features are presented bv the variation 

 at Fort Kearney in June, but the amplitude there was larger, 088 inch and th 

 mean force much higher. In the Laramie curve the cvenino- maximum w'h'ich ha< 

 been small at Kearney, surpasses even the forenoon maximum The Genoa c 

 similar to the August curve of ('amp Fiord; but on account of the peculiar local cii 

 cumstances mentioned above, it has besides the maximum at 9 a m a second althou<>] 

 much lower, maximum in the afternoon about 4 p. m. and consei aentlv' also t\v, 

 minima, the lowest at 1 p. m., and a smaller one between ( ) and 10 n n 



The diagram for Fort liridger, tor the first days of September, No. 'ill is peculiai 

 As far as I can judge from the limited number of "observations, there was a maximun 



ture created 

 lower; at 6 



Aete^mt 



arc h^d I 



at 3 }). m., the tei 



dlen considerabl 



v''lm'",'l 



e and fore 

 te relative 



e of vapor wer 



increased co 



mparativelv i 



nore, and 



caused a third m 



I'ii'siiniiin 



, even a li 



ttle higher thai 



the two othc 



ts, while late 



r the' force 



. 





ess, becau 



se the tempera 



ture became 



rapidly less. 













In orde 

 relative hum 



r to give a la 

 idity,&c.,Ih 



z::z 



irison of the abs 

 ;ed the following 



tZl7- 







means obtaii 



led at the (ire 



enwichob 



servatorv, Knglai 



id as tht 



- a vera <>v < 



>f the seve 



years from 



1841 to 1857 



; also the 



summary of the 







» i _■ 



observah >ry 



oftheGirard 

 fished by Pr< 



CoDege, 1 



sssss 



i 1840 t< 



"> 1845, co] 



s; and bei 





data which have been deduced onlv from a short series of ozonations' and are i'e >eated 

 here from Table E, have been marked with letter. For particulars in regard to th 

 I refer to the explanatory remarks to Tables and D. Those marked a are from "he 

 hourly observations in April at Camp Flovd; b, from the observations 'in August at 

 Camp Floyd; c from those in September at the same station; J, from Woodruff Val- 

 ley m the last days of May and the first ones of June; c, from f km oa, Carson Vallev 

 m June; /, from Fort Kearney, in June; and g, from Fort Laramie, in the last days 

 of July and the first ones of August. > 



