...From thepresence of large quantities of food and the density ofthe integuments, the gizzard cannot always be seen;but in favorable specimens its teeth may be observedbusily at work... 
Henry J. Slack 「Marvels of Pond-life」
...Now, these globulesexpand or contract according to the density of the liquid in which they float...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...Moredifficulties, however, were encountered in the States of New York and NewJersey, on account of the larger territory infected and the density of thepopulation...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...As the germ grows, the contents of the egg becomeclouded and dense, and the air space at the large end of the egg isclearly defined, the density being greatest near it...
John H. Robinson 「Our Domestic Birds」
...treganzaifrom the State; presumably this subspecies occurs widely in low density...
Emil K. Urban 「Birds from Coahuila, Mexico」
...Irregularfluctuations in breeding density have been recorded from DecaturCounty (Wolfe, 1961)...
Richard F. Johnston 「The Breeding Birds of Kansas」
...An inspection under the microscope tells us that the contents of thewhite cells are composed of very fine, opaque grains, insoluble inwater and of greater density...
Jean Henri Fabre Alexander Teixeira de Mattos 「The Glow-Worm and Other Beetles」
... The piston stroke affects only the work of breathing; it does not alter the density, makes hardly any change in that which is heavier than water...
J. Henri Fabre Alexander Teixeira de Mattos 「The Life of the Fly」
...The air is driven out; and the canoe, resuming its mean density, a greater specific density than that of water, goes under at once and descends of its own accord...
J. Henri Fabre Alexander Teixeira de Mattos 「The Life of the Fly」
... I make a point of measuring the density of the population...
J. Henri Fabre 「Bramble-bees and Others」
...Thisthicket stage reached its peak in density in the middle to late fortiescoinciding approximately with the time of maximum abundance of the rats...
Henry S. Fitch 「Ecological Observations on the Woodrat, Neotoma floridana」
...The total fall, depthon the ground, and the density are all aspectsof snow that may vary considerably and affectthe ability of wolves to capture deer...
L. David Mech 「Ecological Studies of the Timber Wolf in Northeastern Minnesota」
...If a density of 250 plants to the square yard beassumed (a high estimate) these crowns represent the total B...
Charles T. Vorhies and Walter P. Taylor 「Life History of the Kangaroo Rat」
...The higher estimates of density appear to be large enough to compensate forany overlapping of home ranges...
Charles L. Douglas 「Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado」
...This does not imply that estimations of home range are of little value;however, calculations of density, using home ranges as a basis, tend to amplifythe variance inherent in the data...
Charles L. Douglas 「Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado」
...maniculatus is found more frequently in pinyon-juniper woodland whenthe population density is high, and when such woodlands adjoin grasslands orsagebrush areas...
Charles L. Douglas 「Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado」
...In 1965, the density of P...
Charles L. Douglas 「Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado」
...Estimates of populationdensity for the subdivisions of the pasture seem more closely toapproach the true population density in areas of favorable habitat...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
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