...“Goand learn your tropics,” said Science... 
Mary H. Kingsley 「Travels in West Africa」
...At that moment a violent storm of thunder and rain burst upon us with a fury well known in the tropics...
Samuel White Baker 「In the Heart of Africa」
... However, as the early hours are profitable hours in the tropics, it did not drive me to homicide...
Stewart Edward White 「African Camp Fires」
...A similarobservation applies to bats, which are dormant during a northernwinter when insects are rare, but never become torpid in any partof the tropics...
J. Emerson Tennent 「Sketches of the Natural History of Ceylon」
...It is found on both coasts of theUnited States, but more common on the Pacific side,during the fall and spring, when going to or returningfrom its winter quarters in the tropics...
Chester A. Reed 「The Bird Book」
...I am not aware that it is found in the tropics,but is a denizen of the North Pacific...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...Presumably in the tropics this species breeds continuously,one generation following another in regular successionunless interrupted by drought or other naturalphenomena...
Clarence M. Weed 「Butterflies Worth Knowing」
...It also belongsto the tropics, occurring in our extreme Southernstates and ranging occasionally as far north as Nebraska...
Clarence M. Weed 「Butterflies Worth Knowing」
...Although eleven species of this remarkable group have beenmet with within our limits, the great mass of the Trochilidæ, which arenow known to number some 400 species, belong to the Tropics...
P. L. Sclater 「Argentine Ornithology, Volume I (of 2)」
...Whether it is a fine singer or not within the tropics I am unable to say,its vocal powers having received no attention from the naturalists whohave observed it...
P. L. Sclater 「Argentine Ornithology, Volume I (of 2)」
...The Cotingidæ are another characteristic Neotropical family, mostlyof splendid plumage, and nearly altogether confined within the limitsof the tropics...
P. L. Sclater 「Argentine Ornithology, Volume I (of 2)」
...As most people are aware, the day begins inthe tropics as nearly as possible at 6 o'clockand lasts twelve hours...
Various 「Hunting in Many Lands」
...North America; nests from northern New Englandnorthward (southward in the Alleghanies to North Carolina);winters in the tropics...
Frank M. Chapman 「What Bird is That?」
...Eastern United States, nesting from the Gulf Statesto Massachusetts and Minnesota; winters in the tropics...
Frank M. Chapman 「What Bird is That?」
...Eastern North America; nests from northern Georgiato Canada; winters in the tropics...
Frank M. Chapman 「What Bird is That?」
...Nests from central Kansas and central New Jerseynorth to Canada, and, in the mountains, south to northernGeorgia; winters in the tropics...
Frank M. Chapman 「What Bird is That?」
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