Tue Microscope. 219 
All parts of the root, excepting the woody bundle and the 
epidermal-like cells, are equally loaded with starch grains simi- 
lar to those of the rhizome. 
A QUEER RHIZOPOD. 
E. A. CONGDON. 
HE accompanying sketch represents a peculiar form of D7f- 
Augia pyritormis recently observed. The neck is greatly 
produced, giving the rhizopod a very awkward appearance. 
The fundus is composed of small irregular particles of quartz, 
while the neck is formed of much larger pieces. No pseudo- 
pods were seen. It was found in the ooze of a pond among 
many other Difflugia, but was the only one of its kind observed. 
It is x45 of an inch long, and zs in width; the neck is tess 
of an inch in breadth and ric long, making it nearly twice as 
long as the rest of the shell. 
Leidy in his Monograph of the Fresh Water Rhizopods of 
North America, describes five varieties of D. pyriformis, but 
to none of them does the specimen under consideration 
conform. 
It might be defined as the characreristic form of D. pyri- 
formis with a greatly prolonged neck. 
IDENTIFICATION OF BLOOD CORPUSCLES. 
BY R. U. PIPER, M. D., CHICAGO, ILL. 
Falsus in unum, falsus in omnibus. 
S a small contribution to the literature of ‘* Blood Identifica- 
tion” I send you a table of the measurement of blood 
corpuscles from thirteen young dogs, selected out of like tables 
of measurement of more than four hundred dogs—setters, 
spaniels, pointers, curs, poodles, etc., ete., which agrees with and 
