of this heating the place of inversion is one of lower level and higher temperature, as is well illustrated by Curve 4.
The latest and fullest summary of our present knowledge of the upper atmosphere is the report by E. GOLD and W. A. HARWOOD, presented at the Winnipeg, 1909, meeting of the British Association for the Advancement of Science, "The Present State of our Knowledge of the Upper Atmosphere as Obtained by the Use of Kites, Balloons, and Pilot Balloons." This report was distributed in pamphlet form at the Winnipeg meeting, and will presumably appear in the general report of that meeting.
The voluminous literature on the isothermal layer is scattered through recent volumes of the meteorological and physical journals, especially Beiträge zur Physik der freien Atmosphäre, Leipzig; Meteorologische Zeitschrift, Braunschweig; Ciel et terre, Bruxelles; Quarterly Journal of the Royal Meteorological Society, London; Comptes Rendus Hebdomadaires de l'Académie des Sciences, Paris; Nature, London; and Monthly Weather Review, Washington.
The temperature data obtained in the whole series of international sounding- balloon observations are very fully discussed in a memoir published by DR. ARTHUR WAGNER in Beiträge zur Physik der freien Atmosphäre, Bd. iii, Hft. 2 and 3 ( Leipzig, 1909). This publication came to hand too late to be utilized in the preparation of the foregoing chapter.