Did Beavers Impound Waters for Ames Peat Bog?

A deposit of peat located in a valley about a mile northeast of Ames, has been known for many years. It is rather unusual in that it lies along a small mature valley rather than in a swale of the upland. Investigation is believed to show that the deposit developed as the result of impounding of water by beaver dams

Characteristics of Heavy Accessory Minerals in a Pre-Cambrian Granite Gneiss

Heavy accessory minerals have been separated from specimens of granite gneiss taken in a traverse across the Beartooth Plateau. Prominent accessories are biotite, magnetite, ilmenite, zircon, apatite, epidote and titanite. Characteristics of zircon, apatite and titanite from these samples are described

Student Participation in Field Classes

Field work consisting of trips and excursions out from the class room plays a prominent part in instruction in many of the science courses throughout our educational system. Almost all courses in general or natural science in the secondary schools have it as an attachment of greater or less rating. So also do the technical or applied science courses in colleges. The materials and features with which the various branches of science deal are widely scattered over the earth\u27s surface. They cannot all be brought into the laboratory and dealt with indoors, nor adequately represented by illustrative materials of one sort or another. Photographs, lantern slides, models and the illustrations of textbooks serve some considerable purpose in this regard, but they fail to give an adequate conception of size, of texture and of space relationships. Thus from the very nature of the materials pertaining to a particular science it is only natural that field class work should have some part in the teaching of that science