Date of Award

Summer 1954

Document Type

Thesis - Restricted

Degree Name

Master of Science (MS)



First Advisor

Barrett, James M.

Second Advisor

Perry, James C.

Third Advisor

OBrien, J.


In recent years, those protozoans of the genus Blepharisma have met with increasing favor as laboratory and experimental animals. The experimental work to date has not been correlated. It can be done so only if a good set of specific criteria exists for the members of this genus. (Our present textbooks and readily accessible "keys" are either completly devoid of such criteria or they are inadequate. It is, therefore, the aim of this thesis to demonstrate possible specific criteria through the detailed cytological study of one member of this genus, Blepharisma persicinum, (Ehrenberg) and compare the results to the accumulated data concerning Blepharisma undulans, (Stein).



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