Smithsonian Miscellaneous Collections, Volume 56Smithsonian Institution, 1912 |
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adult male Aleutian Aleutian Islands apical Atka Island birds blackish BLOW-FLY British East Africa brown buffy caribou caudad chitin chlorine circuli Cisticola CITY OF WASHINGTON COLLECTIONS VOLUME 56 color condylo-incisive length culmen culmen chord dark darker depressed concave diabase diameter dorsal duodenum embryo enteron epithelium feathers feet figure fold grayish hairs Hautes-Alpes hind foot interorbital intestine Island Lado Enclave Measurements.-Head and body median miles MISCELLANEOUS COLLECTIONS VOLUME Mount Kilimanjaro muscles Musculus nasals nests ocean ochraceous oesophagus ORBEM original number Pachacamac Panama pharynx PLATE posterior Processus pteralis alæ Processus pteralis thoracis pyrheliometer raised convex region River rocks scales scutum seen sides skin skull SMITHSONIAN INSTITUTION SMITHSONIAN MISCELLANEOUS COLLECTIONS sodium species specimens stripe subspecies surface tail Tanaga Island tarsus temperature thrust tons tooth row transverse U. S. Nat U. S. National Museum ventral WASHINGTON PUBLISHED whitish wing wolverene zygomatic breadth
Popular passages
Page 9 - Among the receipts of the early part of the year were the last two shipments made by the Smithsonian African Expedition, under the direction of Col. Theodore Roosevelt, including most of the mammals from Uganda, and about 425 small mammals obtained in Java by Mr.
Page 15 - If the age of the ocean is 100,000,000 years, the annual addition of calcium has been 5,528,000 tons; if only 50,000,000 years it is 11,056,000 tons. Subtracting these quantities from the total calcium of the river waters the remainders become 552,142,000 and 546,614,000 tons respectively; the difference being less than the actual uncertainties of the computation. Calculating upon both assumptions the annual precipitation of chemical sediments is as follows, in metric tons: A Annual from rivers (metric...
Page 1 - Murray must have been for the most part, if not exclusively, in the Temperate Zone; where alternations of freezing and thawing tend to break up the rocks and so to render them more easily decomposed by percolating waters. With even moderate humidity the activity of the waters is great and large amounts of material are transported by them. On the other hand, Arctic rivers flow to a~ noteworthy extent over tundra, which is frozen during the greater part of the year.
Page 10 - ... insignificant, it is possible that there may be quantities of disseminated salt which are not so. The sedimentary rocks of marine origin must contain, in the aggregate, vast amounts of saline matter, widely distributed, but rarely determined by analysis. These sediments, laid down from the sea, can not have been completely freed from adherent salts, which, insignificant in a single ton of rock, must be quite appreciable when cubic miles are considered. The fact that their presence is not shown...
Page 14 - The limestones, as shown in my former discussion, constitute only one-twentieth of the sediments, or 3.75 per cent, of the entire area ; but the proportion of carbonates derived from them must be very much larger. The composite and average analyses of rocks give, for lime, 4.81 per cent, in the igneous, and 5.42 in all the sedimentaries, equivalent to 3.78 and 4.26 per cent, of C02 respectively.
Page 2 - I recommend it therefore to the Society, as opportunity shall offer, to procure the Experiments to be made of the present degree of Saltness of the Ocean, and of as many of these Lakes as can be come at, that they may stand upon Record for the benefit of future Ages...
Page 2 - Now if this be the true reason of the saltness of these lakes, it is not improbable but that the ocean itself is become salt from the same cause, and we are thereby furnished with an argument for estimating the duration of all things, from an observation of the increment of saltness in their waters.
Page 10 - ... the four hot, dry months, sweep over the plains between it and the arm of the sea known as the Rann of Cutch. Analyses of the air during the dry season showed a quantity of salt so carried which amounted to at least 3,000 metric tons over the Sambhar lake annually, and 130,000 tons into Rajputana. These quantities are sufficient to account for the accumulated salt of the lake, which the authors were unable to explain in any other way. Examples like this of the Sambhar lake are of course exceptional....
Page 2 - ... increase of saltness in them, I will not dispute it: but shall observe that such a supposition would by so much contract the age of the world, within the date to be derived from the foregoing argument, which is chiefly intended to refute the ancient notion, some have of late entertained, of the eternity of all things; though perhaps by it the world may be found much older than many have hitherto imagined.