 | History, Modern - 1853 - 612 pages
...owes its color to infusoria which are peculiar to South America. Origin of Salt, and Salt Lakes. — At a recent meeting of the Boston Society of Natural History, Prof. HD Rogers presented an interesting communication on this subject. He considers that the origin of the... | |
 | 1857 - 424 pages
...same type, as in man and other of the higher forms of vertebrata. DISTRIBUTION OF AMERICAN TURTLES. At a recent meeting of the Boston Society of Natural History, Prof. Agassiz stated, that he had been engaged in an investigation into the Geographical distribution of... | |
 | Industrial arts - 1858 - 448 pages
...feet; 11, Bowler's Pyramid, 6,345 feet; 12. Eoan Mountain, 6,318 feet. THE HORIZONTAL HEAVE OF ROCKS. At a recent meeting of the Boston Society of Natural History, Prof. Wm. В . Rogers made some remarks upon a peculiar geological condition which he had noticed in the... | |
 | Industrial arts - 1862 - 448 pages
....have worked their way through the stomach into the liver. RATE OF INCREASE OF FRESH-WATER SHELLS. At a recent meeting of the Boston Society of Natural History, Prof. Agassiz made the following observations on the rate of increase and other characters of fresh-water... | |
 | 1862 - 476 pages
...and have worked their way through the stomach into the liver. BATE OF INCREASE OF FRESH-WATER SHELLS. At a recent meeting of the Boston Society of Natural History, Prof. Agassiz made the following observations on the rate of increase and other characters of fresh-water... | |
 | Industrial arts - 1865 - 372 pages
...vibrations they produce. Other species, however, beat them in intensity. The Rattle of the Rattlesnake. — At a recent meeting of the Boston Society of Natural History, Prof. Wyman made a communication on the mode of formation of the rattle of the rattlesnake. In a foetal specimen... | |
 | Industrial arts - 1857 - 426 pages
...the nervous system, giving rise to trembling, loss of sensation, convulsions, &c. VIVIPAROUS FISHES. At a recent meeting of the Boston Society of Natural History, Prof. Agassiz stated that, a few years since he had described a new family of fishes, EnMatocoidcK, hi which... | |
 | George Washington Tryon, Henry Augustus Pilsbry - Marine invertebrates - 1879 - 568 pages
...above that the study of the species of multilocular shells is encompassed with great dillienllies, owing to the variability of their characters; in fact...meeting of the Boston Society of Natural History. Prof. Bickmorc exhibited fifteen shells of Xau/ilnx Pom/iilinK. of various sixes, from one which measured... | |
 | Gastropoda - 1879 - 552 pages
...encompassed with great difficulties, owing to the variability of their characters; in fact the synonymv of the species of Ammonites has been greatly increased...meeting of the Boston Society of Natural History. Prof. Bickmore exhibited fifteen shells of Nautilns Pompiliux, of various sizes, from one which measured... | |
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It will 1* seen from the above that the study of the species of multilocular shells is encompassed with great difficulties, owing to the variability of their characters ; in fact the synonymy of the species of Ammonites has been greatly increased in consequence... 