Papers.

Papers. With an introduction by Felix J. Oinas.

Papers

Record Reviews

Papers

Book Reviews

Book Reviews

Book Reviews

Papers

Papers

Book Reviews

Record Reviews

Indiana Geological Survey Circular 1; This publication could also be titled “Sources of aggregates and types of highway subgrades in Indiana.” Our highways are built of aggregates cemented together with one kind or another of portland cement, bituminous materials, or resinous plastics. Often engineers want to know more about the origin, extent, and mineral composition of gravels and limestones used as aggregate. Because engineers don't have this information, they experience financial loss and frustration until they find the answers. The engineers of the Highway Commission, likewise, know better than anyone else in Indiana the various types of subgrades and the characteristic behavior of each type of aggregate on which our roads are built. But the engineers would like also to know m uch more about the origin, thickness, lateral extent, mineral composition, and interrelationships of the wide variety of subgrades encountered in our highway system. To answer questions of this kind, engineers and aggregate producers, in this country and abroad, are turning increasingly to geology and mineralogy, because these sciences are proving to be the most economical and dependable methods of finding new deposits and of indicating the type and size of subgrades (terranes) that will be encountered by new highways that will cross untested areas. The greatly increased use of aggregates during the past 10 years is being intensified by the demand for aggregates to build the modern heavy duty roads of this decade. These demands already are beginning to exhaust some of our present deposits. New sources of aggregates...

Indiana Geological Survey Circular 5; Rocks are made up of a mixture of minerals. Therefore you need to know what minerals and how much of each mineral are in a rock before you can give that rock a name. This has been an obstacle for the student of nature and natural science who just wants to give a rock he has collected a fairly accurate name without having first to study mineralogy. Simple ways of identifying common species of birds, trees, flowers, and many other living creatures have long been available, but most geologists have not provided similar guides for identifying rocks. To help fill this need I have prepared this brief handbook as an aid in identifying most of the common rocks of Indiana. It does not mention the rarer Indiana rock types. My purpose is to help the beginning student of rocks take his first steps into the subject with a little more confidence. I hope the satisfaction that he may get from being able to identify most rocks he is likely to find in Indiana may awaken in the student of natural history an interest in more serious study of rocks, minerals, and fossils.; Indiana Department of Conservation

The American Studies Association

National Institutes of Health DC00433, RR7031K, DC00076, DC001694 (PI: Gierut); This article was first published in Proceedings of the 26th annual Boston University Conference on Language Developement, ed. B. Skarabela et al., Somerville, MA: Cascadilla Press.

The preceding Comment by Goodfriend [Phys. Rev. A 41, 1730 (1990)] contains three criticisms of our model for analytical quantum-defect wave functions vis-á-vis the atomic Fues potential of Simons [J. Phys. Chem. 55, 756 (1971)]. We rebut the first two criticisms explicitly. This makes the third criticism moot. We stand by our results

The preceding paper, by Martin and Barrientos [Phys. Rev. A 43, 4061 (1991)], comments on our supersymmetry-inspired model of atomic physics. We relate this to other Comments [Rau, Phys. Rev. Lett. 56, 95 (1986) and Goodfriend, Phys. Rev. A 41, 1730 (1990)] and point out that, although the mathematics and physics of the 1974 Simons model [J. Chem. Phys. 60, 645 (1974)] is similar to ours, it is not identical. This is elucidated by explicitly comparing our symmetry-based approach to the more phenomenological approach of Martin and Barrientos.