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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1889 edition. Excerpt: ...than the mediocrities to crush through thick grass and foliage whenever he was scampering for his life, to jump over obstacles, and possibly to run somewhat faster than they. So far as he is small of his kind, he would be better able to run through narrow openings, to make quick turns, and to hide himself. Under the general circumstances, it would be found that animals of some particular stature had on the whole a better chance of escape than any other, and if their race is closely adapted to their circumstances in respect to stature, the most favoured stature would be identical with the M of the race. We already know that if we N call this value P, and write each stature under the form of F + x (in which x includes its sign), and if the number of times with which any value P + x occurs, compared to the number of times in which P occurs, be called y, then x and y are connected by the law of Frequency of Error. Though the impediments to flight are less unfavourable, on the average, to the stature P than to any other, they will differ in different experiences. The course of one animal may chance to pass through denser foliage than usual, or the obstacles in his way may be higher. In that case an animal whose stature exceeded P would have an advantage over mediocrities. Conversely, the circumstances might be more favourable to a small animal. Each particular line of escape would be most favourable to some particular stature, and whatever the value of x might be, it is possible that the stature P + o; might in some cases be more favoured than any other. But the accidents of foliage and soil in a country arc characteristic and persistent, and may fairly be considered as approximately of a typical kind. Therefore those that most favour the...
| ISBN-13 | 9781152433229 |
|---|---|
| ISBN-10 | 1152433229 |
| Weight | 0.40 Pounds |
| Dimensions | 9.00 x 6.00 x 0.27 In |
| List Price | $19.99 |
| Format | Paperback |
|---|---|
| Pages | 114 pages |
| Publisher | |
| Published On | 2010-01-01 |
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