There is a need for a more effective method for the disinsection of intercontinental aircraft. A study was made of the possible toxic hazard associated with a new method of disinsection using DDVP vapour (O,O-dimethyl-2,2-dichlorovinyl phosphate) as the insecticidal agent. In these experiments, men and monkeys were exposed four times ...

A method of preparing analytically pure sodium ethanesulphonate, C(2)H(5)SO(3)Na.H(2)O, in quantity is described. Physiological saline solutions were prepared in which a proportion of the sodium chloride normally present was replaced by an equimolar concentration of sodium ethanesulphonate. The effects of partial or total replacement of sodium chloride were examined upon ...

Murexine or urocanylcholine is a naturally occurring choline ester of urocanic acid which was found in very large amounts in the hypobranchial body of Murex trunculus and other prosobranchiate molluscs. In vertebrates and invertebrates, it was found to possess marked neuromuscular blocking and nicotinic actions, but was almost devoid of ...

In the obituary of Louis C. Karpinski on page 19 of the 6 July issue, the phrase "to the University of Strassbourg in France" is incorrect. Karpinski studied at the Kaiser Wilhelms-Universität zu Strassburg when Strassburg was in Germany.

A collaborative study to determine the suitability of establishing an Author's Preparation of dextran sulfate as an international standard has been carried out. It was concluded from the results that the existing Author's Preparation should not be used for this purpose. The factors governing this decision were (a) that only ...

Epidemiological aspects of (a) bubonic plague and (b) primary pneumonic plague are discussed separately in this study. The cause, spread, and persistence of bubonic outbreaks are dealt with.IN THE CASE OF PRIMARY PNEUMONIC PLAGUE, THE AUTHOR SYSTEMATICALLY REVIEWS THE FACTORS INFLUENCING THE SPREAD OF THE DISEASE: climatic and social conditions, ...

The mechanism of the peroxidative oxidation of diphtheria toxin has been investigated. It has been found that this reaction requires the presence of an oxidizable, dialyzable cofactor in addition to hydrogen peroxide and peroxidase. Cofactors are present in a variety of materials and have been partially purified from urine. The ...