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The pressure of the air in the lungs is the source of power for nearly all speech sounds. The correlations between subglottal pressure, acoustic energy and subjective loudness have been discussed in a recent paper. The present paper considers the effect of different supraglottal articulations on the subglottal pressure, and also establishes further correlations with variations in the perceived stress and with the frequency of vibrations of the vocal cords. The experiments presented in this paper took place in three different countries; but essentially the same techniques were used in each laboratory. Esophageal pressure records were obtained from a small latex balloon 1.5 cm. diameter, 2.0 mm. long, sealed to the end of a polythene catheter of 5 mm. bore.

Nils Hoimgren was born in 1877 and his death was the end of a life long career devoted solely to zoology. His first paper dealing with the bursa copulatrix in elaterids he published as a young student in 1898, and his last, just finished when illness took him away from his laboratory. For almost 20 years lie devoted his work to the study of insects Partly as a result of an expedition to South America in 1904--1905 the termites caught his interest, and in the 27 papers he published on that subject he developed into a prominent expert on the taxonomy of that insect group.

This paper is respectfully dedicated to Brian Haywood and André Grenier, of the McGill Sub-Arctic Research Laboratory, who lost their lives on the Korok River in northern Labrador-Ungava while engaged in filed research. [ABSTRACT FROM AUTHOR]

Elliott's comments on the comparability of heart rate measures in cross-laboratory comparisons are discussed. The present paper attempts to show that the comparison of heart rate data across various laboratories in an attempt to infer motivational states may not be justified. [ABSTRACT FROM AUTHOR]