例文・使い方で印象づける「speculum」の覚え方
スポンサーリンク...This strikingly marked Duck is twenty inchesin length, has a green head and speculum, bluewing coverts and chestnut belly... 
Chester A. Reed 「The Bird Book」
...Similar to the Lesser Scaup in size and plumage,except that it has a narrow chestnut collararound the neck, the back is black instead ofbarred with white, and the speculum is gray instead of white...
Chester A. Reed 「The Bird Book」
...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 and throat as in ♂, back fuscousand buffy; breast and sides ochraceous thickly spottedwith blackish; speculum ashy gray and white...
Frank M. Chapman 「Color Key to North American Birds」
...Throat white; back grayish brown withoutfine bars; speculum gray...
Frank M. Chapman 「Color Key to North American Birds」
...Head andthroat brown; breast and back gray, a white throat-ring;belly and speculum white...
Frank M. Chapman 「Color Key to North American Birds」
...Above andbelow black and rusty, speculum purple bordered withwhite; tail feathers pointed...
Frank M. Chapman 「Color Key to North American Birds」
...Female—Head, dark buff; breast, lighter buff withbrown mottlings; legs, orange colored; speculum sameas the male; bill, yellow, blotched with brown...
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」
...Color—Male—Head and neck, black, showing a greenluster in the sun; back, gray, finely lined with black;under parts, white; speculum, white...
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」
...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」
...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」
...Company is not always pleasing, and I would much rather be polishing a speculum...
Edward Singleton Holden 「Sir William Herschel: His Life and Works」
...Furnaces for the speculum metal were built, standserected, and the 40-foot telescope fairly begun...
Oliver Lodge 「Pioneers of Science」
...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」
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