...The exact proportions of the slave-trade to America can bebut approximately determined... 
W. E. B. Du Bois 「The Suppression of the African Slave Trade to the United States of America」
...In black Africa today only one-seventeenth of the land and a ninth ofthe people in Liberia and Abyssinia are approximately independent,although menaced and policed by European capitalism...
W. E. B. Du Bois 「Darkwater」
..."After the most severe winter weather experienced for twenty yearswe are able to compute approximately our loss of feathered life...
William T. Hornaday 「Our Vanishing Wild Life」
...A large proportion,however, feed both in fall and spring, goingthrough the winter when approximately half grown...
Clarence M. Weed 「Butterflies Worth Knowing」
...One of the best ways to makethis is to place in a wide-mouthed bottle two or threelumps of cyanide of potassium, approximately an inchacross...
Clarence M. Weed 「Butterflies Worth Knowing」
...Three white butterflies of approximately the same sizeare found widely distributed over the United States...
Clarence M. Weed 「Butterflies Worth Knowing」
...The eggs hatch during thelatter part of September and the young caterpillars feedupon the violet leaves for two or three weeks, moulting perhapstwice and becoming approximately half grown...
Clarence M. Weed 「Butterflies Worth Knowing」
...Many persons have assumed that gestation periods in snakes are the intervals between mating and parturition, and that mating and ovulation occur at approximately the same time...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...In the region where the cottonmouth occurs there are approximately 2000 persons bitten annually by poisonous snakes...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...The belly extends approximately one-sixth of the way down the crus and givesrise to a long, slender tendon that inserts on the proximomedial edge of thetibial cartilage...
William B. Stallcup 「Myology and Serology of the Avian Family Fringillidae」
...The tendon of insertion is formed approximately one-half theway down the crus...
William B. Stallcup 「Myology and Serology of the Avian Family Fringillidae」
...
Images were placed in approximately the same location as in the original text...
Elizabeth Cabot Cary Agassiz 「Seaside Studies in Natural History」
...Washington,45:122, July 30, type from Monte Redondo, approximately 30 mi...
E. Raymond Hall 「A Synopsis of the North American Lagomorpha」
...nuttallii usually occurs athigher elevations, or where the two occur at approximately thesame elevation S...
E. Raymond Hall 「A Synopsis of the North American Lagomorpha」
...] Ogden, Weber County, and extends theknown range of this species in Utah approximately 100 miles northeastward...
Stephen D. Durrant 「Additional Records and Extensions of Known Ranges of Mammals from Utah」
...20E), the northeasternmost section of Douglas County, Kansas, approximately 6½ miles north-northeast of the University campus at Lawrence...
Donald W. Janes 「Home Range and Movements of the Eastern Cottontail in Kansas」
...On the afternoonof July 8, we drove south along the beach and establishedCamp 2 on the south side of the Third Pass, approximately 73 milessouth of Washington Beach...
Robert K Selander 「Vertebrates from the Barrier Island of Tamaulipas, México」
...Our records require an extension of known range of this speciessoutheasterly by approximately 50 miles...
Robert K Selander 「Vertebrates from the Barrier Island of Tamaulipas, México」
...The plateau is approximately 900 meters above sea level...
Ticul Alvarez 「The Recent Mammals of Tamaulipas, Mexico」
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