The Analysis of Racial Descent in Animals by Thomas Harrison MontgomeryThe Analysis of Racial Descent in Animals by Thomas Harrison Montgomery

The Analysis of Racial Descent in Animals

byThomas Harrison Montgomery

Paperback | February 6, 2012

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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. 1906. Excerpt: ... CHAPTER IX THE RELATIVE VALUES OF MORPHOLOGICAL CHARACTERS It was one of the principles pointed out in the preceding chapter, that though all characters of every portion of the ontogeny should be considered, yet some of these characters are of relatively greater importance for the determination of descent than others; and that therefore there is a necessity of estimating such values. And it will be recalled that we say a character is of high value in direct ratio to the degree in which it indicates racial descent. So now we shall treat briefly those morphological properties of animals that are available to investigation, and endeavor to decide which kinds of them are of the most worth. A. KINDS OF CHARACTERS A character is simply a property or attribute of an organism. It is then logically incorrect to speak of "negative" characters; to say, for instance, that it is a character of modern Birds to be without teeth in the adult stage. The correct statement would be: these Birds are characterized by a horny covering to the jaws. Frequently one reads that such or such a group, as, e. g., the Mollusca, is definable mostly by negative characters. It may be defined, delimited, from other groups by negative terms, but its characters are all positive, else they would not be properties. On this account there is no occasion for considering the relative values of negative and positive characters, as has so often been done, since a negative character is a contradiction in terms. Next, it is a tenet of the first importance that we are examining characters to get from them a knowledge of the whole organism; and that we gradually construct a knowledge of the whole as we increase the number of properties studied. If any character be omitted, however trivial, our concept o...
Title:The Analysis of Racial Descent in AnimalsFormat:PaperbackDimensions:96 pages, 9.69 × 7.44 × 0.2 inPublished:February 6, 2012Publisher:General Books LLCLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:0217067301

ISBN - 13:9780217067300