Peterson, Ralph Edward.2015-12-312015-12-311941http://hdl.handle.net/2097/24311LD2668 .T4 1941 P41Alkalies--Physiological effect.Cations--Physiological effect.Protozoa--Physiological effect.The effects of some cations upon the growth rate and colloidal nature of the protoplasm of Paramecium caudatumTextMasters theses