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1 Department of Pharmacology, University of Toronto
1. Evidence is presented in this paper that the stimulant drugs, cocaine, nikethamide, metrazol, nicotine, cyanide, picrotoxin, strychnine and caffeine, in appropriate doses, produce an increase in respiratory rate by acting on the respiratory cells.
2. That the depressant drugs, morphine and barbitone, decrease respiratory rate by acting again on the respiratory cells.
Submitted on July 26, 1943