-59- 



the fomi of the curve representing Q /io\, Fev/cett has published 

 a number of such ciirves end the one here set forth should be 

 compared with those. If certain magnitudes of the value of 

 Q/lo\are to be considered specially (as the range form 2.0 



to 2.5, for example), it may be stated that this range rep- 







resents 10 - degree temperature intervals betv/een about 15 and 



o o 



27.5 . For intervals including temperatures below abovit 15 



the coefficient value is greater than 2.5 and for intervals 

 including temperatures abOT*t 27.5 the value is less than 2.0-.. 



A 



It is interesting to note that the coefficient has a value 



o 

 of unity for the 10 - degree range form 24 to 34 , end that 



',, } ' 



the center of this range is 29 . This is additional 



evidence that the optimum temperature for these tests is about 



o 

 29 , the coefficients show that 10-degree ranges centering 



below 29 give Q/io\as greater than unity, while those centering 



o X 



above 29 give ^yiOygs less than unity. 



\ 



