...The largest of the Scoters, length 22 inches,distinguished by a large white speculum on thewing, also a white comet extending from underthe eye backwards...
Chester A. Reed 「The Bird Book」
...Head andthroat brown; breast and back gray, a white throat-ring;belly and speculum white...
Frank M. Chapman 「Color Key to North American Birds」
...No colored speculum...
Frank M. Chapman 「Color Key to North American Birds」
...Ashy gray: speculum white...
Frank M. Chapman 「Color Key to North American Birds」
...Such enlarged glands may bedifferentiated from tumors by passing the hand into the cow's throat after thejaws are separated by a suitable speculum or gag...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...Female—The top of the head of the female is a rustybrown, and with a very faint stripe on the sides; upperparts, gray, spotted with black; speculum, green...
Harry Thom Payne 「Game Birds and Game Fishes of the Pacific Coast」
...Color—Male—Head and neck, green; breast, white,shading into rusty chestnut toward the abdomen; lesserwing-coverts, blue; speculum, green, with white border;legs, orange red...
Harry Thom Payne 「Game Birds and Game Fishes of the Pacific Coast」
...The speculum of the American scaup, or larger blue-bill,is white, the head and neck showing a greenishsheen, quite pronounced in the sunlight...
Harry Thom Payne 「Game Birds and Game Fishes of the Pacific Coast」
...The speculum is gray; bill, bluish with a pale blue bandacross it about a half inch from the end...
Harry Thom Payne 「Game Birds and Game Fishes of the Pacific Coast」
...Sir John, grown more confident,adduced the example of the Newtonian reflector, in which therefrangibility was corrected by the second speculum, and the angle ofincidence restored by the third...
Richard A. Proctor 「Myths and Marvels of Astronomy」
...The mirror or speculum, as it is often called, is a thickmetallic disc, composed of a mixture of two parts of copper with one oftin...
Robert Stawell Ball 「The Story of the Heavens」
...Furnaces for the speculum metal were built, standserected, and the 40-foot telescope fairly begun...
Oliver Lodge 「Pioneers of Science」
...Toovercome the spherical aberration James Gregory, ofAberdeen and Edinburgh, in 1663, in his Optica Promota, proposed areflecting speculum of parabolic form...
George Forbes 「History of Astronomy」
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opinionated etiology salubrious
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