...To the question whence is this fluid derived, the people reply that the insects suck it out of the tree, and our own naturalists give the same answer... 
David Livingstone 「Missionary Travels and Researches in South Africa」
...He evidently has a right to boast that he was "the first to call the attention of naturalists to the 'Njena...
Richard F. Burton 「Two Trips to Gorilla Land and the Cataracts of the Congo Volume 1」
...—by naturalists...
Captain Frederick Marryat 「The Mission; or Scenes in Africa」
...Thersites,was, till recently, unknown to European naturalists...
J. Emerson Tennent 「Sketches of the Natural History of Ceylon」
...There is a peculiarity in the formation of the buffalo's foot,which, though it must have attracted attention, I have never seenmentioned by naturalists...
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」
...In some cases even persons interested inbird life, some of them naturalists too, did not knowwhat was going on in their immediate neighbourhooduntil after the bird was gone...
W. H. Hudson 「Birds and Man」
...Some naturalists of the day, however, place all under the genericname Macacus...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...leucurus, supposedhis species to belong; but other recent naturalists, among whom areDrs...
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」
...This family has been subdivided in various genera by naturalists,each one having his followers; and it is puzzling to know which toadopt...
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」
...All of these, however, belong to the group known to naturalists as the Timber Wolves...
A. R. (Arthur Robert) Harding 「Wolf and Coyote Trapping」
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