382 



THE BLOOD, BY ALEXANDER ROLLETT. 



corpuscles in various animals, and a few of his mean values 

 will be found in the subjoined note.* 



The smallest corpuscles are those of the Moschus Javanicus. 

 Amongst the largest are those possessed by the perennibran- 

 chiate Proteus anguinus, and the Siren lacertina (the long 

 diameter of which amounts to ^ mm. and the short to ^ mm.).-f > 

 The largest known, according to Riddel, f are those of the 

 Amphiuma tridactylum, which are one-third larger than those 

 of the Proteus. 



Welcker employed a very short cylinder of plaster of Paris, 



