...Although naturalists distinguish only two living species of elephants,viz... 
David Livingstone 「The Last Journals of David Livingstone, in Central Africa, from 1865 to His Death, Volume II (of 2), 1869-1873」
...The sportsmen and naturalists of Canada and NewBrunswick would render good service by making a close and carefulinvestigation of that question...
William T. Hornaday 「Our Vanishing Wild Life」
...Alden Loring (one of the naturalists of the RooseveltAfrican Expedition), is an ardent lover of wild birds and mammals...
William T. Hornaday 「Our Vanishing Wild Life」
...The Aspidura has been known to naturalists for manyyears; the Haplocercus ofCeylon has only recently been described by Dr...
J. Emerson Tennent 「Sketches of the Natural History of Ceylon」
...It closely resembles the green Passerita in form, sothat naturalists have considered it to be a mere variety...
J. Emerson Tennent 「Sketches of the Natural History of Ceylon」
...These are known to the natives under the name of Theliya,and to naturalists by that of Mastacembelus...
J. Emerson Tennent 「Sketches of the Natural History of Ceylon」
...The rain changed to hail and then tosnow, and much to the surprise of the naturalists,they heard the squeak of the Coneys all night long...
Ernest Thompson Seton 「Wild Animals at Home」
...This monkey is one over which many naturalists have argued; it issynonymous with Macacus speciosus, M...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...English naturalists have however acceptedTupaia; and, as Dr...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...No two naturalists describe it exactly alike...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...
Before passing on to the true Cervidæ I must here place an animalcommonly called a deer, and generally classed as such—the musk-deeraccording to some naturalists...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...
Now comes the more difficult task of subdividing these sections intogenera—a subject which has taxed the powers of many naturalists,and which is still in a far from perfect state...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...Now comes the more difficult task of subdividing these sections intogenera—a subject which has taxed the powers of many naturalists,and which is still in a far from perfect state...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...There has, however, recently been a reactionamong naturalists in regard to the validity of many supposedexamples of warning coloration and the whole subjectis still open to careful investigation...
Clarence M. Weed 「Butterflies Worth Knowing」
...These structures are a great puzzle to naturalists...
Clarence M. Weed 「Butterflies Worth Knowing」
...The change of color in the fur of this animal is not understood by naturalists...
Elmer Harry Kreps 「Science of Trapping」
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martins contemporary fumble
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