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Charles D. Walcott

Publications and source records attributed to Charles D. Walcott.

At least 19 recordsLinked to original sources
USGS2009

II.-Note on Some Appendages of the Trilobites

The results of Mr. W. S. Valiant's long search for the appendages of Trilobites have recently been made known by Mr. W. B. Matthew, who described the material sold to the Columbia College of New York by Mr. Valiant. Mr. Valiant informs me that he discovered traces of what he considered to be antennæ, and that for several years he continued collecting until he found a locality where the specimens were well preserved and showed, not only the antennæ, but legs and what he supposed to be the swimming appendages.

Geological Magazine↗
USGS1906

Twenty-seventh annual report of the Director of the United States Geological Survey

During the last fiscal year the character of the work and the organization of the force remained substantially the same as described in the Twenty-sixth Annual Report. Accounts of the work performed in geology and paleontology, chemistry and physics, topography and geography, and hydrography, hydrology, and hydro-economics, as well as in the lines of publication and administration, will be found on later pages. Appropriations and allotments .--A plan of operations, including an itemized statement of the appropriations, amounting to $1,513,482.30, and the allotments thereof, was approved by the Secretary of the Interior on May 15, 1905. The work of the year conformed to this plan, copies of which are on file at the Department and the Survey. State cooperation .--Many of the States, following a well-established policy, cooperated with the National Survey in geologic, topographic, and hydrographic work; details are given on pages 12, 29, 72, and 74.

Annual Report↗
USGS1903

Twenty-fifth annual report of the director of the United States Geological Survey, 1903-1904

The United States Geological Survey was created by an act of Congress that was approved on March 3, 1879, so that March 3, 1904, may be said to have marked the twenty-fifth year of its existence. There was recently issued by the Survey, partly in recognition of the quarter-century anniversary, a bulletin (No. 227) describing its origin, development, organization, and operations, and it will not be inappropriate to quote here, in this twenty-fifth annual report, a few paragraphs of that publication.

Annual Report↗
USGS1902

Twenty-Second Annual Report of the Director of the United States Geological Survey, 1900-1901: Part I - Director's report and a paper on asphalt and bituminous rock deposits

The work of the Geological Survey during the fiscal year 1900-01 was mainly a continuation of that of previous years, described in former reports. The organization was changed somewhat (see p. 48), but in a general way similar results were reached, which added materially to the sum of geologic and geographic knowledge. The detailed record of accomplishment, both in field and in office, will be found on later pages, under the heading " Work of the year" (p. 53). In this introduction some subjects of special interest will receive consideration.

Annual Report↗
USGS1902

Twenty-second annual report of the Director of the United States Geological Survey, 1900-1901: Part IV - Hydrography

I have the honor to transmit herewith the manuscript for a volume on hydrography, prepared for publication as Part IV of the Twenty-second Annual Report of the Survey. The data presented relate to the investigations carried on during the calendar year 1900. The first part of the report discusses the results of measurements of streams in different parts of the United States, the facts being presented in diagrammatic form as well as by statistical tables. The arrangement adopted is that of preceding reports of this series, being a geographic order, beginning in the extreme northeastern part of the United States and ending in the southwestern portion. A number of papers, prepared independently, have been incorporated in this part of the report, with such modification as was necessary to bring them into accord with the general arrangement. Following the report of stream measurements is a paper by Mr. Arthur Powell Davis, giving conclusions based upon his work while detailed to the Nicaraguan and Isthmian canal commissions. The original data have been incorporated in the reports of those bodies; but since this important investigation has been conducted by one of the members of the United States Geological Survey it is particularly appropriate that a brief recapitulation of the principal facts should appear in this volume. The resume here given contains the facts of chief interest to students of hydrography, thus rendering them available for consideration in connection with similar data obtained for the United States. The last paper, " The High Plains and their utilization," by Mr. Willard D. Johnson, is a continuation of that in the Twenty-first Annual Report, Part IV, the completion of which was unfortunately interrupted. Although this break in the sequence involves some inconvenience for reference, it will not detract from the value of the material.

Annual Report↗
USGS1901

Twenty-First Annual report of the Director of the United States Geological Survey, 1899-1900: Part VII - Texas

Area treated. —The Black and Grand prairies of Texas and southern Indian Territory comprise about 50,000 square miles (see Pl. LXV, in pocket)—an area equal to that of fifty of the quadrangles mapped and described by the United States Geological Survey in its Geologic Atlas of the United States. The accompanying general geologic map (Pl. LXVI, in pocket) is a condensed presentation of the geology usually shown on that number of atlas sheets as published in folio form. Most of these quadrangles have been studied by the writer and his former assistants. Sources of data. —An entirely satisfactory presentation of these results is still impossible by reason of the lack of adequate maps. The topographic maps of the United States Geological Survey, which cover 24 of the 50 units of area, were made in the earlier years of the Survey and with a contour interval insufficient for the expression of the geology. For the remaining portion of the area it was necessary to use as a base the Land Office maps of the State of Texas. The conclusions herein presented, often condensed in a short paragraph, are founded upon a large amount of paleontologic, stratigraphic, and topographic data. The results, so far as they refer to the Black and Grand prairies, are the outcome of studies made by the writer since 1882, sometimes independently, sometimes with the assistance of the United States Geological Survey, and during two years in connection with the Texas Geological Survey. In times past he has been assisted in this work by his former students, C. C. McCulloch, now captain, U. S. A.; Messrs. Wilson T. Davidson and L. T. Dashiel; Mr. Joseph A. Taff, now of the United States Geological Survey; Dr. J. W. Stone, Mr. N. F. Drake, and Mr. G. H. Ragsdale. Inasmuch as the details which these gentlemem worked out were problems of the writer's suggestion, he has incorporated them into this paper, and here acknowledges indebtedness therefor. Upon the writer's retirement from the Texas Survey, Mr. Taff continued the work of mapping the region. He published two reports, which have been freely used and which have been of great assistance in the preparation of this paper. Importance of paleontology. —In addition to the collection of the data which appear in the text and illustrations, much paleontologic research has been necessary in order to classify the formations. Paleontology is the most reliable guide in determining the position of any bed in the geologic series with a view to ascertaining the depth, from any particular portion of the surface, of the underground waters in the Cretaceous regions of Texas. If a few species of fossils, such as can be found in any locality, be sent to one familiar with the sequence of the beds, he can predict within a few feet the depth below the surface of any particular water-bearing stratum in the series. It was a labor of years to disentangle the preexisting confusion concerning the occurrence and succession of these fossils and their bearings upon the determination and definition of the strata. Their further consideration has been left to Mr. T. W. Stanton, who, it is presumed, will make final publication of the descriptions and the scientific results. This is not a final and complete report. Detailed field work is desirable in many localities. Chemical analyses of water and illustrations of typical scenery should be more complete, but these were not obtainable with the means and time at the writer's disposal. When appreciation of geologic investigation shall have been awakened in Texas and the region under discussion shall have been studied more closely by resident students, in the manner now common in other parts of the United States, the data here presented will be largely increased and refined, and the conclusions will doubtless be correspondingly amended and rectified.

Texas↗