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Plato 1.-Huronian quartzite of East Neebish Rapids, Saint Mary's River...
II.-Crystal-faced enlargements of quartz fragments.
V.-Thin sections of sandstone and quartzite.
VI.—Thin sections of quartzite, &c.....
187 197 199 207 209 213 229 229 230 231
BULLETIN NO. 10.
Plate I.- Fossils of the Saint Jobn formation
II.-Fossils of the Saint John formation.
336 338 340 342 344 346 348 330 352 354
BULLETIN NO. 11.
Plate 1.- Sketch map of the Great Basin
II.—Comparative dimensions of Pompholyx effuva
V.-Comparative dimensions of shells....
VI.–New recent and Quaternary mollusca.
357 412 414 416 418 420 365 400 400
BULLETIN NO 12.
Plate I.-A characteristic specimen of thinolite
II.--Illustrations of the structure of thinolite
III.-Illustrations of the structure of thinolite....
423 452 454 431
BULLETIN NO. 14.
Page Fig. 1.-Electrical conductivity and temperature-coefficient of silver-platinum alloys
608 Fig. 2.—Diagram of tho relation between specific electrical resistance and tem
peraturo-coefficient for wrought iron, for steel, and for cast iron... 615 Fig. 3.—Diagram of a resistance apparatus for measuring heat conductivity.. 618 Fig. 4.- Apparatus for hardening steel rods
621 Fig. 5.-Form of thermo-element
624 Fig. 6.-Disposition of thermo-electric apparatus...
625 Fig. 7.—Disposition of appartus for measuring the galvanometer-factor.. 625 Fig. 8.-Details of thermo-electric apparatus.....
626 Fig. 9.-Hard wires annealed for six consecntive hours in steam, at 1000. 638 Fig. 10.—Hard wires annealed continuously at 09, 66°, 1000, 1850, 3300, and 1,0000, respectively....
647 Fig. 11.—Diagram of the relation between the thermo-electric power of steel in different states of temper, and its specific resistance
656 Fig. 12.-Disposition of apparatus for calibration ...
665 Fig. 13.-Specific resistance and thermoelectric constant; ster!, silver-gold, silver-platinum, silver-zino....
678 Fig. 14.-Disposition of apparatus ...
698 Fig. 15.--Specific magnetism of rods annealed from 0° to 1,0000
709 Fig. 16.-Disposition of apparatus for resistance measurement
713 Figs. 17, 18.-Relation between specific magnetism and hardness of steel for different dimension-ratios ...
733 Figs. 19, 20.-Relation between specific magnetism and dimension-ratio of steel rods, for different degrees of hardness
735 Fig. 21.-Diminution of specific magnetism and specific resistance produced by continued annealing (low temperatures).
748 Fig. 22.-Simultaneous variation of specific magnetism and specific resistance in case of continued annealing (low temperatures)...
754 Fig. 23.-Simultaneous variation of specific magnetism and specific resistance in case of continued annealing (high temperatures)..
756 Fig. 24.-Diagram of the inean variation of the thermo-electric harness and of
the specific electric resistance of iron carburets, with their degrees
The publications of the United States Geological Survey are issued in accordance with the statute approved March 3, 1879, which declares that
“The publications of the Geological Survey shall consist of the annual report of operations, geological and economic maps illustrating the resources and classifications of the lands, and reports upon general and economic geology and paleontology. The annual report of operations of the Geological Survey shall accompany the annual report of the Secretary of the Interior. All special memoirs and reports of said Survey shall be issued in uniform quarto series if deemed necessary by the Director, but otherwise in ordinary octavos. Three thousand copies of each shall be published for scientific exchanges and for sale at the price of publicatiou ; and all literary and cartographic materials received in exchange shall be the property of the United States and form a part of the library of the organ. ization. And the money resulting froin the sale of such publications shall be covered into the Treas. ary of the United States."
On July 7, 1882, the following joint resolution, referring to all Government publications, was passed by Congress :
** That whenever any document or report shall be ordered printed by Congress, there shall be printed, in addition to the number in each case stated, the "usual number” (1,900) of copies for binding and distribution among those entitled to receive them."
Under these general laws it will be seen that none of the Survey publications are furnished to it for gratuitous distribution. The 3,000 copies of the Annual Report are distributed through the documentrooms of Congress. The 1,900 copies of each of the publications are distributed to the officers of the legislative and executive departments, and to stated depositories throughout the United States.
Except, therefore, in those cases where an extra number of any publication is supplied to this office by special resolution of Congress, as bas been done in the case of the second, third, fourth and fifth Annual Reports, or where a number bas been ordered for its use by the Secretary of the Interior, as in the case of Williams's Mineral Resources; the Survey has no copies of any of its publications for gratuitous distribution.
Of the Annnal Reports there have been already published:
I. First Annual Report to the Hon. Carl Schurz, by Clarence King. 1880. 89, 79 pp. 1 map. A preliminary report describing plan of organization and publications.
II. Report of the Director of the United States Geological Survey for 1880-'81, by J. W. Powell. 1882. 89. lv, 588 pp. 61 pl., 1 map.
III. Third Annual Report of the United States Geological Survey, 1881-'82, by J. W. Powell. 1883. 80. xviii, 564 pp. 67 pl. and maps.
IV. Fourth Annual Report of the United States Geological Survey, 1882-'83, by J. W. Powell. 1884. 80. xii, 473 pp. 85 pl. and maps.
The Fifth Annual Report is in pross.
So far as already determined upon, the list of the Monographs is as follows:
III. Geology of the Comstock Lode and Washoe District, with atlas, by George F. Becker. Pablished.
IV. Comstock Mining and Miners, by Eliot Lord. Published.