Corrections in the President's Address. 195 



reduced to so nearly the same extent as the number of the mole- 

 cules of liquid water is increased by the above-named correction, 

 that the numbers given in the Address may be considered to be as 

 good an approximation to the truth as can be determined in the 

 present state of the question, and all the general conclusions need 

 not be in any way modified. 



In order to avoid any misunderstanding, it may however be 

 well to give the corrected numbers, which are as follows : 



The contraction of the vapour of water in condensing into a 

 liquid should be to raV'T- 



The number of atoms and molecules in a cubic yoVo iiich 

 should be — 



In a gas 6,000,000,0n0,00n 



In liquid water 3,700,000,000.000.000 



Inborn 05,000,000,000,000 



In living albumen — 



Albumen 17,000,000,000.000 



Water in molecular combination .. 923,000,000,000,000 



940,000,000,000,000 

 In a spbere of ^^oo ^^^ diameter — 



Albumen 10,000,000,000,000 



Water in molecular combination . . 490,000,000,000,000 



500,000,000,000,000 



In the length of ^wo-o inch there .would be about 2000 mole- 

 cules of water and 500 of albumen, which were the numbers 

 previously adopted, so that the general conclusions are not at all 

 modified by the corrections. 



VOL. XV. 



