STETSON SPEAKS ABOUT ATMOSPHERIC CEILING

Stating that no man-carrying balloon can ever take scientists above the stratosphere, Dr. Harlan T. Stetson, Harvard University Research Associate in Geophysics in his lecture on "Exploring Beyond the Stratosphere" at the Institute of Geographical Exploration last night stressed the importance of investigating this ionosphere, the most sensitive district for effects of cosmic origin.

Showing that geographical exploration concerns itself with investigating the earth from its crust beneath to the top of the atmosphere, Dr. Stetson said we must advance into these upper regions to discover new facts about the effect of the attraction of the sun and the moor for the earth, and about ultra-violet radiation.

Dr. Stetson concluded, "Important changes in the electric and magnetic characteristics of the atmosphere and the earth in this region of the globe will prove a new incentive for geographical exploration in the future. Extensive journeys already made by cosmic ray specialists have yielded valuable results, and the future will see new tools and equipment accompanying an increasing band of workers into these newer fields of exploration."