558 Comparative Power of Alcohol, Ether, and Chloroform, etc. 



At a temperature of 20° a time 4 min. was required for the abolition of 



contractility. 



^0° 9 



» 37 1 2o „ » • j> 



Hence at the end of each minute, 



in Case (I) 0*25 unit change took place^ Keferring to unity, 



„ (II) 05 „ „ y ratio of numbers 



„ (III) 0-6 „ „ J =1:2: 34. 



By Esson's formula,* (ki — ic) = m log (n — r). 



Iog2 = 3010 log3'4 = 5051 



loo- 1 



3010 5051 



log 273 + 30 = 4814 log 273 + 37 = 4914 



log 273 + 20 = 4669 log 273 + 20 = 4669 



0145 0245 



3010 = 20-8. 20-6. Mean, 207. 



0145 245 



Hence 0"0145 x 207 = 0-3002 = 1-99 calc, 2'00 found. 



0-0245 x 20-7 = 0-5072 = 3-22 „ 3-20 „ 



The graph of logic' //c in terms of log t/t is a straight line and is the most 

 convenient form of representation. 



* ' Phil. Trans.,' A, 1895, vol. 186, p. 861. 



