DESCRIPTION OF GEOLOGICAL SECTIONS CROSSING

NEW HAMPSHIRE AND VERMONT.

BY PROFESSOR C. H. HITCHCOCK.

Six years ago the final report upon the Geology of New Hampshire was published by order of the legislature. Since that time the author of this paper, who held the office of state geologist, has had occasion to revise the general sections described in his report, and also to extend them through Vermont. Specimens to the number of three thousand illustrate them upon the shelves of the museum of the New Hampshire College of Agriculture and the Mechanic Arts, where colored profiles will also be found upon a liberal scale. The profiles are forty feet long, extending the entire length of the room upon the back side of the case and between the shelves. The different series of strata are represented by colors, and the numbers printed upon the profiles correspond to those pasted upon the specimens directly in front. Thirteen shelves are arranged in order, one over another, from the floor to the ceiling. Care is taken not to impede the view of the colored profiles by braces or railing in the gallery, so that the visitor may examine the whole series either in detail or at a glance. These shelves are a truthful representation of nature. Three thousand ledges are represented in their proper geographical order, and by proper study any one can classify the several groups without the labor of travelling over the country. More or less of theory is given in the profiles, and the author is desirous of having his views submitted to criticism. The conclusions derived from the study of these sections have been embodied in the reports upon the geology of