While engaged on the determination of the radium content of the samples of ocean-bottom taken by the ship Carnegie on her last (1932) cruise, the author became aware of the desirability of core samples of this material rather than the usual “snapper” samples then available. Diagrams of a suggested apparatus were discussed with several oceanographic investigators, but no money was available for development. Early in 1933, A. C. Lane brought the subject to the attention of the Geological Society of America, and in October of that year the Council, on the recommendation of the Committee on Projects, approved a grant for a project, of which this report is the conclusion.
The requirements of an apparatus designed to operate at the end of a line under a mile or more of water are varied and conflicting. Deep soundings are difficult to make at best, and skin-friction is such that a . . .