GEOLOGY OF THE PRESIDENTIAL RANGE
By Richard P. Goldthwait '33.New Hampshire Academy of Science Bull.NO. 1, 1940. 43 pp. $.40 (Obtainable from theSecretary, Silsby Hall, Hanover, N. H.)
DR. GOLDTHWAIT is to be congratulated for he has told, clearly and in simple language, the story of the formation of the Presidential Range. This geological history has been deciphered as a result of detailed observation and interpretation of the rocks and topography. Foreign boulders found on the summit of Mt. Washington indicate that at one time the continental ice sheet covered even the highest summit of the Presidential. Glacial grooves on the headwall of Tuckerman Ravine, first discovered by the author, demonstrate that the continental ice sheet came after the local glaciation had sculptured this and some of the other ravines. In addition to making valuable scientific contributions this bulletin will be of interest to all who know the White Mountains for it points out the geological significance of many common features found along the trail.
