The American Naturalist, Volume 35, Part 2

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Essex Institute, 1900 - Biology
 

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Page 570 - Such a column is of enormous length, and contains many thousands if not millions of individuals. I have sometimes followed them up for two or three hundred yards without getting to the end. They make their temporary habitations in hollow trees, and sometimes underneath large fallen trunks that offer suitable hollows. A nest that I came across in the latter situation was open at one side. The ants were clustered together in a dense mass, like a great swarm of bees, hanging from the roof, but reaching...
Page 571 - ... at least a cubic yard in bulk, and contained hundreds of thousands of individuals, although many columns were outside, some bringing in the pupae of ants, others the legs and dissected bodies of various insects. I was surprised to see* in this living nest tubular passages leading down to the centre of the mass, kept open just as if it had been formed of inorganic materials. Down these holes the ants who were bringing in booty passed with their prey. I thrust a long stick down to the centre of...
Page 834 - Notes on the Mosquitoes of the United States : Giving Some Account of Their Structure and Biology, with Remarks on Remedies.
Page 804 - Mr. WA Cannon,* in discussing a Cecidomyid gall on the Monterey pine, says that the "larvae take their food only by absorption through the surface of the body...
Page 830 - No. 23 of the Division of Agrostology of the United States Department of Agriculture.
Page 712 - 66 OWEN, RICHARD. Anatomy of Vertebrates. Vol. i, p. 515. '86 PACKARD, AS Zoology. 1886. '77 PARKER, WK On the Structure and Development of the Skull in the Batrachia. Phil. Trans. Vol. clxvi, Pt. 2. '75 PETERS. Ueber die von Herrn Buchholtz in West-Afrika gesammelten Amphibien.
Page 986 - HOW TO KNOW THE WILD FLOWERS. A Guide to the Names, Haunts, and Habits of our Common Wild Flowers. By Mrs. WILLIAM STARR DANA.
Page 870 - P. squamosvs, in which the scales are becoming obsolete in the adult, they are found at a later stage on the right valve than on the left. In other cases the grooves of the left valve divide and become ornamented while the right valve remains simple. Here, then, the index of variability is an index of phylogenetic changeableness.
Page 817 - ... creature a little way off; the wasp came out, brought it to the opening as before, and went within a second time. This was repeated again and again until the patience of the naturalist was exhausted, and the persistent wasp took her booty in after her appropriate fashion. She must place the grasshopper just so close to the doorway, she must then descend and examine the nest, and after that must come out and drag it down. Nothing less than the performance of these acts in a certain order satisfies...
Page 781 - Vogt believes that certain dinosaurs were leaping or perching animals, and infers that the avian characters of the pelvis and hind limbs thus came to be evolved from community of habit with birds. He is, however, not indisposed to see in dinosaurs possible parents of the ratites ; while the Archaeopteryx would be the ancestor of the birds that fly." In 1882 Dollo also ('82, '83) advanced the more modern idea that the resemblances in the pelvis and hind limbs might as well be considered adaptive as...

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