... But in the lapse of a long series of years, by a progression slow, and for a time almost imperceptible, we had become rich in a variety of acquirements... 
Thomas Clarkson 「The History of the Rise, Progress and Accomplishment of the」
...Their second mode of progression is “tobogganing...
George Murray Levick 「Antarctic Penguins」
...Rectilinear locomotion is more useful to large, thick-bodied snakes which use this method of progression, chiefly when they are prowling and unhurried...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...When swimming, a motion resembling horizontal undulatory progression is used...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...He did not seem to be inany feverish anxiety to reach me, but therewas an earnest air about his progression thatwas ominous...
Various 「Hunting in Many Lands」
...The feet are generally placed very far back, a position which isexceedingly favorable to their action in swimming, but which renderstheir progression on the land somewhat awkward...
Robert Jennings 「Sheep, Swine, and Poultry」
...Moving outwards a little from the body, and then moving back again, thislever serves as a means of progression, its terminal hooks being alreadyfairly strong...
J. H. Fabre Bernard Miall 「Social Life in the Insect World」
...The same organ, rising and falling, opening and closing,does much to assist the act of progression...
Jean Henri Fabre Alexander Teixeira de Mattos 「The Glow-Worm and Other Beetles」
...Its ordinary mode of progression ishopping along on the large hind legs, or, when in the open and goingat speed, leaping...
Charles T. Vorhies and Walter P. Taylor 「Life History of the Kangaroo Rat」
... to the knowledge stored in the library atAlexandria had not been added a progression of learning...
Dr. D.M. Brooks 「The Necessity of Atheism」
...Thekanguroo, though it resembles the jerboa in the peculiarity ofusing only the hinder legs in progression, does not belong tothat genus...
Arthur Phillip 「The Voyage Of Governor Phillip To Botany Bay」
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