The American Journal of Science and ArtsS. Converse, 1864 - Science |
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Page iii
... Insects , III . On Fossil Insects from the Carboniferous formation in Illinois ; by JAMES D. DANA , IV . The Density , Rotation and Relative Age of the Planets ; by · · · Page . 1 10 34 36 66 70 Prof. GUSTAVUS HINRICHS , Iowa State ...
... Insects , III . On Fossil Insects from the Carboniferous formation in Illinois ; by JAMES D. DANA , IV . The Density , Rotation and Relative Age of the Planets ; by · · · Page . 1 10 34 36 66 70 Prof. GUSTAVUS HINRICHS , Iowa State ...
Page vi
... Insects of the Amber- fauna , ( Ueber die Diptern - fauna des Bernsteins ) : a lecture by Director Law , at the meeting of the German naturalists in Koenigsberg , in 1861 , XXVIII . Abstract of Prof. Meissner's Researches on Oxygen ...
... Insects of the Amber- fauna , ( Ueber die Diptern - fauna des Bernsteins ) : a lecture by Director Law , at the meeting of the German naturalists in Koenigsberg , in 1861 , XXVIII . Abstract of Prof. Meissner's Researches on Oxygen ...
Page 10
... Insects.1 THE principles which have been presented in my former ar- ticle on the classification of animals may be further exemplified by a discussion of the natural system of classification in a few subdivisions of the animal kingdom ...
... Insects.1 THE principles which have been presented in my former ar- ticle on the classification of animals may be further exemplified by a discussion of the natural system of classification in a few subdivisions of the animal kingdom ...
Page 11
... Insects , Spiders , and Crustaceans ; ( E ) an analyzed or elementalized condition , being a more or less complete resolution into elemental segments or parts , each more or less nearly of normal equality ; ( F ) an elliptic condition ...
... Insects , Spiders , and Crustaceans ; ( E ) an analyzed or elementalized condition , being a more or less complete resolution into elemental segments or parts , each more or less nearly of normal equality ; ( F ) an elliptic condition ...
Page 12
... Insects -- the higher ( a ) when the larve is im- perfect in its mouth - organs and nearly or quite foot - less ; the lower ( b ) when it has large mouth - organs and is locomotive and active . Condition b distinguishes the lower ...
... Insects -- the higher ( a ) when the larve is im- perfect in its mouth - organs and nearly or quite foot - less ; the lower ( b ) when it has large mouth - organs and is locomotive and active . Condition b distinguishes the lower ...
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Common terms and phrases
amber ammonia amplification antozone appear beds body boiling Brongt carbon Carboniferous centre cephalic cerium character chemical chlorhydric acid chlorid Coleopters color comet containing crystalline crystals determined Diptera distance distinct earth electric elongated ethylene evaporation fauna feet feldspar force formation fossil genera genus geology gives heat Herbivores hornblende Hymenopters inches inferior Insects iridium iron JOUR Journal lake latter layer less long-amplificate Lord Rosse mass Megasthenes memoir metallic miles mineral moon nearly nebula Neuropters nickel nitric acid North observations obtained orbit Orthopters oxyd oxygen ozone Paleozoic plants plates portion potash potassium precipitate present produced Prof pyroxene quantity remarkable rhodium river rocks ruthenium salt sandstone SCI.-SECOND SERIES seen silicates soda solar solution species specimens stars structure subdivisions sulphate sulphid of ethylene sulphuric acid surface temperature tephroite thallium tion titanic acid titanium tube velocity XXXVII
Popular passages
Page 456 - Manual of Elementary Problems in the Linear Perspective of Form and Shadow I2mo, i oo Plane Problems in Elementary Geometry I2mo, i 25 Primary Geometry I2mo, 75 Elements of Descriptive Geometry, Shadows, and Perspective 8vo...
Page 137 - Annual Report of the Regents of the University of the State of New York, on the Condition of the State Cabinet of Natural History, and the Historical and Antiquarian Collection annexed thereto.
Page 289 - Bigelow, was published at the time in the fifth volume of the " New England Journal of Medicine and Surgery." In the year 1820 Dr. Boott crossed the Atlantic for the last time, and proceeding to London entered upon the study of medicine, under the direction of the late Dr. Armstrong. He continued his medical studies at the University of Edinburgh, where he took the degree of MD in 1824. The next year he...
Page 447 - Resolved by the National Academy of Sciences, That, in the opinion of this academy, the volumes entitled "Sailing Directions," heretofore issued to navigators from the Naval Observatory, and the "Wind and Current Charts," which they are designed to illustrate and explain, embrace much which is unsound in philosophy, and little that is practically useful ; and that therefore these publications ought no longer to be issued in their present form.
Page 138 - Preliminary Notice of the Fauna of the Potsdam Sandstone ; with remarks upon the Previously known species of Fossils, and Descriptions of some New Ones, from the Sandstone of the Upper Mississippi Valley. Ibid., pp. 119-209, 6 plates. 127. Supplementary Note on the Potsdam Sandstone.
Page 188 - When accident brings them into the immediate neighbourhood of the earth, they produce the phenomena of shooting-stars and fireballs. It has been shown by repeated observation, that on a bright night twenty minutes seldom elapse without a shooting-star being visible to an observer in any situation. At certain times these meteors are observed in astonishingly great numbers; during the meteoric shower at Boston, which lasted nine hours, when they were said to fall " crowded together like snow-flakes,"...
Page 196 - This view, it was thought, explained why the warming power of the sun was so much weaker at the top of a mountain than at the bottom, and why, in spite of his immense radiation, he retained his full powers. This belief, which especially prevails amongst imperfectly informed people, and which will scarcely succumb to correct views, is directly contradicted by the excellent experiments made by Pouillet at different altitudes with the pyrheliometer. These experiments show that, everything else being...
Page 409 - ... 00109. This ratio represents the proportionate elevation or depression of the barometer above or below its mean height that should be caused by the earth's rotation, and it corresponds very nearly with the actual disturbance at stations near the equator. From Oh. to 6li.
Page 190 - ... through which the weight falls increases. This velocity, however, if it be only produced by the fall, cannot exceed a certain magnitude ; it has a maximum, the value of which depends on the volume and mass of the attracting celestial body. Let r be the radius of a spherical and solid celestial body, and g the velocity at the end of the first second of a weight falling on the surface of this body ; then the greatest velocity which this weight can obtain by its fall towards the celestial body,...
Page 421 - This plant is evidently quite distinct from Calamites proper. The Calamite-like cast is a pith or internal cavity, surrounded by a thick cylinder of woody tissue consisting of scalariform vessels and woody fibres with one row of round pores; external to this is a bark of cellular and bast tissue. The structure appears to be allied to that of Sigillaria and is one of the most common in the beds of bituminous coal. M. C., Sydney (R. Brown) ; MC, Joggins, Pictou (JWD) ; Coal Creek (CB Matthew).