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abundant acid aggregate alteration angle appear augite axis Baltimore bands biotite brown hornblende calcite cents character chemical chlorite cleavage color colorless compact composed composition constituents Cortlandt crystalline described developed diabase diallage dikes diorite epidote eruptive rocks feldspar feldspar crystals felsite fibrous hornblende foliation fragments gabbro Geological Survey Gesteine gneiss grains granite green hornblende greenstone schists groundmass hornblende hypersthene igneous ilmenite inclusions iron Lake lamellæ leucoxene limestone magnetite Marquette Maryland mass massive rocks Menominee metamorphism mica microscope mineral Mineralogie Mountain needles Neues Jahrbuch norite observed occur olivine optical original parallel peridotites petrographical plagioclase planes plates pleochroism porphyritic present produced Prof Professor pyroxene quartz Quinnesec region resemblance River Rosenbusch rutile saussurite schistose schistose structure schists secondary sedimentary seen sericite serpentine shows slates specimens sphene Sturgeon Falls substance tion trace tuffs twinning U. S. Geol Upper Quinnesec Falls uralite volcanic rocks
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Page 5 - The publications of the United States Geological Survey are issued in accordance with the statute approved March 3, 1879, which declares that— "Thepublicationsof the Geological Survey shall consist of the annual report of operations, geological and economic maps illustrating the resources and classification of the lands, and reports upon general and economic geology and paleontology.
Page 5 - Director, but otherwise in ordinary octavos. Three thousand copies of each shall be published for scientific exchanges and for sale at the price of publication; and all literary and cartographic materials received in exchange shall be the property of the United States...
Page 7 - Price 5 cents. 20. Contributions to the Mineralogy of the Rocky Mountains, by Whitman Cross and WF Hillebrand. 1885. 8°. 114pp. 1 pi. Price' 10 cents. 21. The Lignites of the Great Sioux Reservation.
Page 41 - III. Geology of the Comstock Lode and the Washoe District, with Atlas, by George F. Becker. 1882. 4°.
Page 41 - Price 5 cents. 3. On the Fossil Faunas of the Upper Devonian, along the Meridian of 76° 30', from Tompkins County, New York, to Bradford County, Pennsylvania, by HenryS.
Page 6 - Newberry. 1888. 4°. xiv, 152 pp. 26 pi. Price $1.00. XV. The Potomac or Younger Mesozoic Flora, by William Morris Fontaine. 1889. 4°. xiv, 377 pp. 180 pi. Text and plates bound separately. Price $2.50. XVI. The Paleozoic Fishes of North America, by John Strong Newberry. 1889. 4°. 340 pp. 53 pi. Price $1.00. XVII. The Flora of the Dakota Group, a Posthumous Work, by Leo Lesquereux. Edited by FH Knowlton. 1891. 4°.
Page 41 - 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.
Page 8 - Price 10 cents. 65. Stratigraphy of the Bituminous Coal Field of Pennsylvania, Ohio, and West Virginia, by Israel C. White. 1891. 8°. 212pp. 11 pi. Price 20 cents. 66. On a Group of Volcanic Rocks from the Tewan Mountains, New Mexico, and on the Occurrence of Primary Quartz in Certain Basalts, by Joseph Paxson Iddings.
Page 6 - Price 10 cents. 2. Gold and Silver Conversion Tables, giving the coining values of troy ounces of fine metal, etc., computed by Albert Williams, jr. 1883. 8°. 8 pp. Price 5 cents. 3. On the Fossil Faunas of the Upper Devonian, along the meridian of 76° 30', from Tompkins County, NY, to Bradford County, Pa., by Henry S.
Page 8 - Mineral Resources of the United States. 1883 and 1884, by Albert Williams, jr. 1885. 8°. xiv, 1016 pp. Price 60 cents. Mineral Resources of the United States. 1885. Division of Mining Statistics and Technology. 1886.