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14 days acid Alumina ancient animals apatite appears beds Blainville Brachiopoda Bryozoa cannel carbonic carboniferous character chemical Cherry chloride claret clay coal colour composition contains cretaceous Crustacea crystals deposits Devonian dorsal fin earth Edinburgh epidote epochs existence extent fact fauna feet fishes flora formation fossil France genera geological geological periods geologists globe important Islands labour land less lichens Light brownish-red lime Limestone lodes lower Magnesia mass matter means meionite mica Mineralogy minerals Museum Natural History number of species Nummulites observed occur oolitic organic remains origin oxide oxygen palaeozoic peculiar period Peroxide of iron phenomena plants Polarity portion Potash present produced Professor Jameson quantity quartz races regard remarkable rocks sand Sandstone scapolite shew silica Silurian Society Soda specimens strata structure substance surface temperature tertiary tion trace Trilobites tropical types Unaltered upper variety vegetable Wernerite whole zoological
381 페이지 - Sketch of the Natural Provinces of the Animal World, and their relation to the different Types of Man, reaffirms the homogeneous characteristics and ethnic insulation of the American Indian on entirely novel and independent grounds.
ii 페이지 - An address delivered at the anniversary meeting of the Geological Society of London, on the 19th of February, 1841 ; and the announcement of the award of the Wollaston medal and donation fund for the same year.
347 페이지 - ... subject, viz., the natural relations between the different types of man, and the animals and plants inhabiting the same regions. The sketch here presented is intended to supply this deficiency, as far as it is possible in a mere outline delineation...
190 페이지 - Mutton .... 2-96 23'38 Veal 2-87 22'67 The last table shows that the true order should be beef, chicken, pork, mutton, and veal, a result which experience confirms. It may, however, be remarked, that there is considerable difference between the same kind of meat derived from different animals ; and that the same amount of two different kinds of beef broth, both containing the same amount of water, may have very different nutritive values.
186 페이지 - The stone surfaces of buildings, by being exposed to the action of the atmosphere, become liable to disintegration from various causes. Moisture is absorbed into their pores. The tendency of their particles to separate, in consequence of expansion and contraction, produced by alternation of temperature, is thus increased. Sulphurous acid is always present in the atmosphere of coal-burning cities, and cannot but corrode the calcareous and magnesian ingredients of oolites and dolomites. It is true...
187 페이지 - ... equally corroded. These specimens were exhibited in the Theatre of the Institution. But whatever ultimate results may ensue from this process, the immediate effects on the stone are remarkable. Two portions of Caen-stone were exhibited, one of which had been soaked in a solution of waterglass two months before. The surface of the unsilicated specimen was soft, readily abraded when brushed with water, and its calcareous ingredients dissolved in a weak solution of sulphurous acid. The silicated...
374 페이지 - We shall certainly, then, be within bounds if we assume the period of such elevation to have been equivalent to the one above arrived at ; and, inasmuch as there were at least ten such changes, we reach the following result : — Last emergence as above, . . 14,400 years.
375 페이지 - ... made for the purpose of quickening the process of germination. If all the seeds germinate, the seed obtains the highest value in the market. If only eighty germinate, the seed loses 20 per cent, in value. This process ordinarily occupies from twelve to fifteen days ; but Mr. Lawson found that by using blue glass they are enabled to determine the value of seed in two or three days : and this is a matter of such commercial importance to them that it is quite equal to a gift of £500 a year.