. The polar and tropical worlds [microform] : a description of man and nature in the polar and equatorial regions of the globe : two volumes in one : embracing also an account of the expeditions of all the Arctic explorers from the discovery of Iceland, over one thousand years ago, to Hall's last expedition in the northern world, together with the wonderful discoveries and adventures of Agassiz, Livingstone, Wallace, and other distinguished travelers in the tropical countries. Arctic races; Tropics; Natural history; Races arctiques; Régions tropicales; Sciences naturelles; genealogy. TIIK SIL
. The polar and tropical worlds [microform] : a description of man and nature in the polar and equatorial regions of the globe : two volumes in one : embracing also an account of the expeditions of all the Arctic explorers from the discovery of Iceland, over one thousand years ago, to Hall's last expedition in the northern world, together with the wonderful discoveries and adventures of Agassiz, Livingstone, Wallace, and other distinguished travelers in the tropical countries. Arctic races; Tropics; Natural history; Races arctiques; Régions tropicales; Sciences naturelles; genealogy. TIIK SILK-WOUMâTUK COCIIIXKAL INSKCT. 691 ihrpads, and tliousamlH upon thousands. cnjo}inj» the of their lahors, now clothe thi'iiiselves, at a moderate price, in Hiliien wliieh but a few centuries hack were the exehisivc hixury of the ricliest and noblest of the hind. Besides the silk-worm, we find many other moths in tiie tropical zone whoso cocoons might advantageously he spun, and only re(|uire to Ito better known to become con- (liilerable articles of comoierce. The tusseh worm {/iomhi/j- uiijUttn) of Hindosfan, vvliich lives upon the leaves of the llhanmus jujulia, furnislu's a dark-colored, coarse, liut durable silk ; while tho Arandi {li. cynthia), which feeds upon the foliage of the castor oil plant (/^'c/hms co?«ni»«/.s), spins remarkably soft threads, which serve the Hindoos to weave tissues (.f u!'connnon strength. In America there are also many iiuligcnous moths wlux^ie filaments might bo rendered serviccaiile to man, and whicli K'cm destined to great future importance, when trade, miitting her usual routine, shall have learnt to pry more closely into the resources of Nature. While the Coc(ti, or ], are in our country deservedly detested as a nuisance, destroying the beauty of many of our garden plants by their blighting presence; while, in IHl.'J, tho Coccus of tho orange trees proved so destructive in the Azores that the island
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Keywords: ., bookcentury1800, bookdecade1870, books, booksubjectnaturalhistory
