THE MICROSCOPE. 211 



process I have seen only the termination. The partially separated 

 animals when first observed were connected by a single broad band 

 which quickly parted, the two ends suddenly flying apart as if 

 strongly pulled in opposite directions. The Rhizopods then moved 

 off as though nothing unusual had happened. They were nearly 

 equal in size. 



It would be interesting to know how long one Heterophrys takes 

 to make of itself two. 



DIFFERENTIATION OF BLOOD CORPUSCLES. 



THAD S. UP DE GRAFF. 



r PHE criticism, by Professor Stowell, in the October number of 

 I the Microscope, concerning the testimony given by myself in 

 the Wellsboro murder trial, attributes to me certain assertions so at 

 variance with what was really said, that I am unwilling to permit 

 them to go unchallenged. 



The first statement alluded to requires no contradiction among 

 my friends, but, lest other readers of this journal should consider me 

 the egotistic ass that such an utterance would proclaim one, let me 

 inform them that I did not say that " there were but four men in the 

 world who could tell human from dog's blood," and to which Prof. 

 Stowell adds — "and, of course, he was one of them." 



Secondly, I did ?tot say that "on account of the superior char- 

 acter of his glasses and that his microscope cost sixteen hundred 

 dollars, he could do much better than others." 



Thirdly, my testimony did not "give a definite size to the 

 human red blood corpuscle," any more than do the sizes quoted by 

 Prof. Stowell from Gulliver, Flint, Dalton, Richardson, Woodward 

 and other eminent gentlemen, give definite size or significance to 

 the human corpuscle. 



Since it is of trifling consequence to your readers, and none 

 whatever to the theme under consideration, what I did say that ad- 

 mitted of such distortion as not to be recognizable, I will content 

 myself with a simple denial of the utterances quoted and devote the 

 space offered me to replying to the question: "Can human blood be 

 told (distinguished) from that of the dog?" 



My opinion is — be it modestly proclaimed — it can, beyond a 

 reasonable doubt. Lam apprehensively conscious of differing with 



