. Lake Superior [microform] : its physical character, vegetation and animals, compared with those of other and similar regions . Natural history; Sciences naturelles. 248 LAKE SUPERIOR. co\mtric3 -whence it came from. And the more minutely avc trace this .^eo.^rnithlcal distribution, tlie more wc are impressed with the Conviction that it must he ])rimitive, that is to say, that animals must luive ing turtle, the alligator, the rattlesnake, and other reptiles "hicli are i'lund only in Anicrica, have become extinct in the Old AViiiid hiigruting over the , to be ju'eservrd ni t
. Lake Superior [microform] : its physical character, vegetation and animals, compared with those of other and similar regions . Natural history; Sciences naturelles. 248 LAKE SUPERIOR. co\mtric3 -whence it came from. And the more minutely avc trace this .^eo.^rnithlcal distribution, tlie more wc are impressed with the Conviction that it must he ])rimitive, that is to say, that animals must luive ing turtle, the alligator, the rattlesnake, and other reptiles "hicli are i'lund only in Anicrica, have become extinct in the Old AViiiid hiigruting over the , to be ju'eservrd ni tliis continoiit ; whether the fishes of the griMl Canadian lakes made their ai'pearance -^ir*: in those waters, or 'â 'i;--ited thither fron; s ^^'^where else ? These are the cjuestions wlueh such an iui|uiry into tlie geo- graphicid ili ;l;"'ibutioii of animjls Involves; it is the great question of the unity or plurality of creations ; it is not less the (juesti(j)i of the origin of a'aiinals from single pairs or in large numbers: and. strange to sav, a thorotigh examination of the fishes of ]jakc ;"mij oi'ior, eom- witli of Ihc adj ..cent waters, is likely to throw more liglit iiiiou st'.ch (piestlons, than all traditions, howe\er ancient, however near in point of time to tlie eiioch of creation Itself. In order to inCLhoili ;ally in this investigatioj). our first step must be to examine muuitely. whether the fishes of Lake Sujie- rior are the same as those of other lakes in this or any otliL'r country, and if not, how they diit'tr. To satisfy ourselves in this resjicct, we shall successively examine all the families of fishes which have repre- sentatives In those great freshwater ii !:. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Agassiz, Louis, 1807-1873; es.
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Keywords: ., bookcentury1800, booksubjectnaturalhistory, booksubjectsciencesn
