...The latter is an inhabitant of thenorthern seas only, but the sperm abounds in warmer waters, beingfrequently found in the sub-tropical oceans... 
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...During the last forty years the Americans alone have taken at therate of 10,000 barrels of sperm oil per annum, or upwards of fourmillion barrels since 1835...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...The sperm whale, though of such enormousbulk and courage, yet has enemies besides man...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...The sperm whale is knownfrom the others by the way in which it spouts, the jet being thrownup obliquely forwards, and it blows at regular intervals...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...I haveheard whalers assert that a wounded sperm in the death agony willvomit immense pieces of squid...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...When decomposition has reached the proper stage, add a quart of sperm oil or some liquid animal oil...
A. R. (Arthur Robert) Harding 「Wolf and Coyote Trapping」
...The testes increase in size gradually rather than rapidly at maturity or in each breeding season, but seasonal cycles in sperm production occur...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...Testes: the tubular structures in the male, in whichthe production of spermatogonia, and often also of later stagesin the development of the sperm takes place...
John. B. Smith 「Explanation of Terms Used in Entomology」
...Like sperm and humpback whales, they usually throwtheir flukes high into the air when beginning a long dive...
Stephen Leatherwood 「Whales, Dolphins, and Porpoises of the Western North Atlantic」
...If only the back and tailflukes are seen, however, sperm whales may somewhatresemble humpback whales...
Stephen Leatherwood 「Whales, Dolphins, and Porpoises of the Western North Atlantic」
...They weresought because in addition to whale oil produced from thebody blubber, the forehead of the species yielded quantitiesof spermaceti like that obtained from sperm whales...
Stephen Leatherwood 「Whales, Dolphins, and Porpoises of the Western North Atlantic」
...Dwarf sperm whales reach an overall length ofapproximately 9 feet (2...
Stephen Leatherwood 「Whales, Dolphins, and Porpoises of the Western North Atlantic」
...Testes that are at least partly scrotal must be consideredas being capable of producing motile sperm, even though this may not be thecase for all individuals...
Charles L. Douglas 「Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado」
...Oviducts of several females were flushed by means of a pipetteto determine whether they contained sperm...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...Mature sperm were found in epididymides at all times of the yearbut were most numerous in spring and autumn, the period betweenspermatogenic cycles ()...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...Females are inseminatedwith sperm produced in the preceding year...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...The Sperm Whale rarely exceeds sixty feet inlength and lives in warm regions, such as theIndian Ocean; rarely, if ever, visiting Arctic or European seas...
Various 「Natural History in Anecdote」
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