1897 THE MIOROSCOPE. 39 
is a fair average, and 0.381 of a gallon of the above is red . 
globules. One cubic inch of these corpuscles made into 
a chain of a single corpuscle’s breadth would be 3,200x 
3,200 inches long, or 1,600,000 inches. As there are 231 
cubic inches in a gallon 0.381 of 231 would give the cubic 
measure of red globules in the above man. Thus 1,600,- 
000x88 gives 140,800,000 inches. Reduced to miles, this 
equals, counting 63,360 inches to the mile, two thousand 
two hundred and twenty-two miles! The little invisible 
red corpuscles or oxygen carriers of our blood would then, 
if “hitched” together into achain reach two-thirds across 
the American continent! A single hair from one’s head 
would make in calibre very many fibres as large. 
And yet, small as these corpuscles are, they are giants 
when compared with many well known individuals of the 
bacterial world. Think of a body which has to be mag- 
nified eight hundred diameters to be visible at all. You 
have here some of the monococci. Yes, and these incon- 
civably small bodies are endowed with life, organization 
and means of propagation. 
What Can the Microscopist Find to Study in Winter? 
By E. E. MASTERMANN, 
NEW LONDON, OHIO. 
The study and examination of animal tissues, which 
are almost always at hand, can be pursued in winter as 
well as at any other time. 
There is no winter, in this section, but occasionally it 
‘thaws’? when plenty of material can be obtained in 
ponds, ditches, creeks and rivers. Indeed one will find 
specimens in winter not obtainable at any other time of 
year. 
If one really cares for his work and is in earnest about 
it, he will have the forethought to provide sufficient 
quantity of material gathered and preserved for winter 
