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Tropics (X) Sociobiology (X) Penn State University's Electronic Classics Series Collection (X)

       
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The Voyage of the Beagle

By: Charles Darwin

...een of the deciduous trees. It may be observed, that the houses within the tropics are surrounded by the most beautiful forms of vegetation, because m... ...nivorous beetles, or Carabidae, appear in extremely few numbers within the tropics: this is the more remarkable when compared to the case of the carni... ...e district, and not by the absolute heat. It is well known that within the tropics, the hybernation, or more properly aestivation, of ani- mals is det... ...ck, they make the sam odd mixture of sounds which bull-frogs do within the tropics In Tierra del Fuego, as well as in the Falkland Is- lands, made man... ... mass of the thriving and the fallen reminded me of the forests within the tropics — yet there was a difference: for in these still solitudes, Death, ... .... The vegetable- feeding Chrysomelidae, so eminently characteristic of the Tropics, are here almost entirely absent;* I saw very few flies, butterflie... ... or not it is healthy, that if a person had been told to choose within the tropics a situa- tion appearing favourable for health, very probably he wou... ...hat peculiar one, which may be per- ceived in almost every town within the tropics, was here very strong. The fortress, which withstood Lord Cochrane’... ... by wild bananas, lilaceous plants, and other luxuriant productions of the tropics. The Tahitians, by climbing amongst these ledges, search- ing for f...

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On the Origin of Species

By: Charles Darwin

...er confinement, I may just mention that carnivorous animals, even from the tropics, breed in this country pretty freely under con- finement, with the ... ...ly suffered much extinction; how much no one can say; perhaps formerly the tropics sup- ported as many species as we see at the present day crowded to... ...mate; for Dr. Falconer informs me that it is the damp with the heat of the tropics which is so destructive to perennial plants from a temperate climat... ...at some temperate productions entered and crossed even the lowlands of the tropics at the period when the cold was most intense,—when arc- tic forms h...

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