This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1877 edition. Excerpt: ...the " island of desolation," or was less embarrassed by other and higher branches of natural history, than ours; and Messrs. Nylander and Crombie have thus been able to largely extend this curious lichen-flora; while a comparison with Dr. Hooker's specimens (very few, indeed, of which could be discovered in ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1877 edition. Excerpt: ...the " island of desolation," or was less embarrassed by other and higher branches of natural history, than ours; and Messrs. Nylander and Crombie have thus been able to largely extend this curious lichen-flora; while a comparison with Dr. Hooker's specimens (very few, indeed, of which could be discovered in the herbarium of Dr. Taylor) has enabled them to determine some of the latter writer's new species, for the determination of which his own descriptions were entirely inadequate. There is also something over a page, in Mr. Crombie's last paper, of observations on the present writer's list of Kerguelen lichens above mentioned, upon which it will be proper to make some remarks. And first as to what is called the unfortunate "neglect of the chemical reactions," which, it is said, renders the "diagnosis incomplete, and so far uncertain." This is simply a matter of opinion. I studied the question of the use of certain chemicals in the systematic investigation of lichens, with such care as I could give it, ten years ago, and have since seen no reason to change the view then expressed (Amer. Naturalist, April, 1868). The application to the lichen-tissues of the tests used is not without interest, and may give results of some utility, so far at least us they go; but this quantum videtur impedes every stage of the inquiry, and the unequivocal value assumed for the results has never been any thing but an assumption. And opinions may also differ as to the value of the chemical "species" which have resulted from the "reactions." Dr. Nylander has remarked of one of these species, his Parmelia cetrarioides, that it scarcely differs from another except chemically, --"vix differt nisi+reactione.... a P....
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