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1 From the Department of Pharmacology, The University of Minnesota Medical School, Minneapolis
A simple technique for producing spinal anesthesia in the frog is described. This method is suitable for class experimentation and for obtaining relative evidence on the value of spinal anesthetics.
A series of local anesthetics has been studied by this method in summer frogs. The therapeutic coefficient of each has been determined by the fraction M.L.D./M.A.D. In order, beginning with the anesthetic of lowest therapeutic coefficient, these drugs are: nupercaine, stovaine, butyn, alypine, pantocaine, procaine, neothesine, cocaine, and tutocaine.
Submitted on December 9, 1931