A bibliography of information about various clays, kaolins, and the ceramic arts.

A report about the fauna of the Saint John Formation contained in the Hartt Collection.

This report was prepared with 29 specimens of rock which are described in this report.

A report which discusses the specific classification, stratigraphic occurrence, and relationships of one particular group of the many kinds of fossil oysters occurring in the Lower Cretaceous formations of Texas.

A report that focuses on the widespread decay of the surface rocks throughout the Appalachian region. It also focuses on the iron-stained sands which result from subaërial decay of crystalline rocks that agree in many ways with iron-stained sands forming certain geologic formations.

A report about recorded shock waves observed or felt on Mount Hamilton, and all those reported to the Lick Observatory by letter, as well as newspaper reports of such earthquakes that occurred in California during that year.

This report provides a brief history of each mineral species occurring within the area of the three river counties in Massachusetts.

A report about 2,053 brachiopods which are described or identified in this paper.

This report aids in finding any geographic feature upon the atlas sheets of Connecticut published by the U.S. Geological Survey.

A report which provides information about American phosphate of lime deposits.

A paper designed to aid in finding any geographic feature upon the atlas sheets of Rhode Island published by the U. S. Geological Survey. It contains the names given upon those sheets.

From outline: This work is a review, by one who is working in the Cambrian field, of the work of his predecessors, and of the results they and he have thus far obtained as he interprets them. It thus becomes historical and descriptive, and is a general statement of the principles upon which the correlations have been made in establishing the group.

A paper pertaining to the trap dikes of the region around Lake Champlain.

The following report contains all of the shocks observed or felt on Mount Hamilton in 1892, and all those reported to the Lick Observatory by letter, as well as newspaper reports of earthquakes.

A report that critically reviews the characteristics of the Eocene of the Middle Atlantic Ssope as represented in the states of Deleware, Maryland, and Virginia.

A bibliography of geologic literature published in North America, and such literature on North America wherever published. It contains publications from 1732 to those received prior to the close of 1891.

Report presenting some of the work done by the Department of the Interior in 1891-82 and 1892-93.

A report designed to aid in finding any geographic feature upon the atlas sheets of Massachusetts which are published by the U.S. Geological Survey.

From introduction: The object of this memoir is to give some account of the geology of the lower Potomac formation in Virginia, where it is perhaps most typically developed.

From outline: The primary object of this bulletin is the presentation of a summary of our present knowledge of the North American Cretaceons and a discussion of the system as it is developed on this continent, discussion of or direct reference to the details of the system as it is developed in other parts of the world being omitted.

A bibliography which records papers pertaining to North American geology, paleontology, petrology, and mineralogy published in the year 1894.

From introduction: In December, 1892, as the result of field work on the part of Dr. G. H. Williams in the northern and of the writer in the southern portion of South Mountain, there appeared a preliminary description of two of the rock types, in which their identification as ancient volcanics was announced. In this bulletin it is proposed to substantiate that identification with more detailed proof. It is further proposed to show that these ancient igneous rocks were, at the time of their consolidation, identical in character with their recent volcanic analogues, and that their present differences are due to subsequent changes, chief among which has been devitrification. It is also proposed to recognize these facts in the nomenclature.

From letter of transmittal: The results contained in this report are the product of investigations conducted during the past three months. These investigations were in extension of the work on which was based my report, as State geologist of Missouri, on the lead and zinc deposits of the whole State.

From preface: The preparation of this paper is due to the fact that the eruptive rocks occurring on Pigeon point, Minnesota, may be taken as types of similar eruptives found so widely spread over the Huronian and Keweenawan areas surrounding Lake Superior, and to the peculiar nature of the alteration these have superinduced in the fragmental rocks through which they have broken.