The action of anesthetic agents on the loss of potassium from isolated guinea pig auricles.

I. The Action of Anesthetic Agents on the Loss of Potassium from Isolated Guinea Pig Auricles. William C. Holland 1 II. A Comparison of Hypnotic Agents. Louis Lasagna 9 III. The Fate of Dibenzyline in the Body and the Role of Fat in its Duration of Action. B. B. Brodie, Lewis Aronow and Julius Axeirod 21 IV. Mode of Action of Antagonists to Curare. II. Anti-Curare Action of Hydroxyphenyltrialkylammonium Compounds in Avian Muscle. Edward W. Pelikan, Cedric M. Smith and Klaus R. Unna 30 V. Pharmacological Properties of Some Antimetabolites of Serotonin Having Unusually High Activity on Isolated Tissues. E. Shaw and D. W. Woolley 43 VI. The Effect of $-Diethylaminoethyldiphenylpropylacetate (SKF No. 525A) on the Anticonvulsant Properties of Antiepileptic Drugs. Ewart A. Swinyard, Jack A. Madsen and Louis S. Goodman 54 VII. Estimation of Morphine in Biological Materials. L. A. Woods, J. Cochin, E. G. Fornefeld and M. H. Seevers 64 VIII. Plasma Levels, Urinary and Fecal Excretion of Morphine in Non-Tolerant and Tolerant Dogs. J. Cochin, J. Haggart, L. A. Woods and M. H. Seevers 74 IX. Species Differences in the Respiratory and Cardiovascular Response to Serotonin (5-Hydroxytryptamine). J. A. Schneider and F. F. Yonkman 84 X. Differences in Mode of Neuromuscular Blockade in a Series of Symmetric Bis-Quaternary Ammonium Salts. Stephen Thesleff and Klaus R. Unna 99 XI. Blood Sulfhydryl Changes in Methemoglobinemia, a Possible Factor in Protective Effects of Nitrite and Paraminopropiophenone. Erwin P. Vollmer and Mary M. Carey 114 XII. The Actions of Barbiturates on the Contractions of Voluntary Muscle. Charles P. Kraatz and Melvyn I. Gluckman 120