Smithsonian Contributions to Knowledge Volume 2

Smithsonian Contributions to Knowledge Volume 2

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1851 edition. Excerpt: ...Floscularia ornata, Gonium glaucum, "pectorale, Hydatina senta Lacinularia socialis Lepadella ovalis, Melicerta ringens " nuda, B. PI. 3, figs. 8 and 10, Megalotrocba alboflavicans, Mctopidia lepadella, Monostyla lunaris, Noteus quadricornis Notommata longiseta, CEcistes crystallina Opercularia articulata, Ophrvdium versatile Peridinium carolinianum, B. PI. 3, f. 4, 5 "cinctum, Ehr Philodina erythropthalma vestita, B. PI. 3, figs. 9, 14, . Pterodina patina, ' magna, B. PI. 3. tig. 19 Rotifer macrourus, CD Descriptions of most of the above species, with figures and copious lists of synonyms, may be found in Ehrenberg's splendid volumes, "Die Infusionthierchen," and accounts abridged from the same work are given in Pritchard's "Infusoria, Living and Fossil." The latter work was the one I had with me in my Southern tour. Note. In the preceding tables I have separated the Desmidiese and Diatomaceaj from the Infusoria, and I have done so because many distinguished observers now consider these groups as decidedly belonging to the vegetable kingdom. While 1 believe that no accurate line of separation can be drawn between vegetables and animals, I am yet disposed to consider the Desmidiea?, from the sum of all their characters, as most nearly allied to admitted vegetables, while the Diatomaceae, notwithstanding Thwaites' interesting observations on their conjugation, still seem to me, as they have always done, to be true animals. There is such apparent volition in their movements, such an abundance of nitrogen in the composition of their soft parts, and such resemblances between the stipitate Gomphonemata?, and some of the Vorticelhe, that I should still be disposed to class them as animals, even if Ehrenberg's...show more

Product details

  • Paperback | 200 pages
  • 189 x 246 x 11mm | 367g
  • Rarebooksclub.com
  • United States
  • English
  • Abridged
  • abridged edition
  • black & white illustrations
  • 1236920287
  • 9781236920287