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s 7900.92.14

HARVARD
UNIVERSITY
LIBRARY
NO7 22 1954

LOXDOX:
R. CLAY, SOXS, AND TAYLOR,

LREAD STREET MIL

PREFACE.

The luxuriance and beauty of Tropical Nature is a well-worn theme, and there is little new to say about it. The traveller and the naturalist have combined to praise, and not unfrequently to exaggerate the charms of tropical life-its heat and light, its superb vegetable forms, its brilliant tints of flower and bird and insect. Each strange and beautiful object has been described in detail; and both the scenery and the natural phenomena of the tropies have been depicted by master hands and with glowing colours. But, so far as I am aware, no one has yet attempted to give a general view of the phenomena which are essentially tropical, or to determine the causes and conditions of those phenomena. The local has not been separated from the general, the accidental from the essential ; ind, as a natural result, many crroneous ideas have become current as to what are really the characteristics of the tropical as distinguished from the temperate zones.

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