ss 
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tebe Sasa ee- 
Vor. LV. ANN ARBOR, APRIL, 1884. No. 4. 
WHOLE No. 21 
Original Communications, 
ASTASIA HAMATODES. 
BY T. B. REDDING, A. M.. PH. D. 
i the January number of THE Microscopr, 1884, I observe 
that Professor Lockwood speaks of the Astasia Hwmatodes 
as a hitherto unknown infusorian in the new world. As an 
addition to information upon that subject, allow me to say that 
I found it here about five years ago in a bayou about five miles 
from this place, in small quantity, presenting the appearance 
described by Prof. Lockwood. Three years ago last summer I 
found it in great abundance in my fish pond, containing about 
one-eighth of an acre, which is suppled by spring water con- 
ducted through gravel and tile. It varies in depth from a few 
inches to 6 feet. The outlet is at the bottom of the deepest 
part, hence there is no current through it. It is exposed to the 
full effects of the sun, not having any shade. Sometimes nearly 
half of the pond has been covered with a scum of a blood red 
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