Category: Science - Biology
Pre-Darwinian Evolutionists—Causes which led to the speedy triumph of the theory of Natural Selection—Nature of the opposition which Darwin had to overcome—Post-Darwinian biology—Usually accepted classification of present-day biologists as Neo-Lamarckians and Neo-Darwinians is...
The theory of protective colouration has been carried to absurd lengths—It will not bear close scrutiny—Cryptic colouring—Sematic colours—Pseudo-sematic colours—Batesian and Mül...
17. Chapter III. of the _Origin of Species_.“The causes,” writes Darwin (new edition, p. 83), “which check the natural tendency of each species to increase in number are most obscure. Look at the most vigorous species; by...
11. CHAPTER IIIThe assumption of Darwin and Wallace that variations are haphazard in origin and indefinite in direction—If these assumptions be not correct Natural Selection ceases to be the f...
15. CHAPTER VIIMeaning of the term—Fatal to Wallaceism—Sexual Selection—The law of battle—Female preference—Mutual Selection—Finn’s experiments—Objections to the theory of Sexual Selection—Wal...
13. CHAPTER VPhenomena which a complete theory of inheritance must explain—In the present state of our knowledge it is not possible to formulate a complete theory of inheritance—Different ki...
9. CHAPTER IPre-Darwinian Evolutionists—Causes which led to the speedy triumph of the theory of Natural Selection—Nature of the opposition which Darwin had to overcome—Post-Darwinian biolog...
10. CHAPTER IIBrief statement of Theory—Objections to the Theory fall into two classes—Those which strike at the root of the Theory—Those which deny the all-sufficiency of Natural Selection—O...
12. CHAPTER IVThe alleged sterility of hybrids a stumbling-block to evolutionists—Huxley’s views—Wallace on the sterility of hybrids—Darwin on the same—Wallace’s theory that the infertility o...
8. CHAPTER VIII 345Variation along definite lines and Natural Selection are undoubtedly important factors of evolution—Whether or not sexual selection is a factor we are not yet in a position to d...
16. CHAPTER VIIIVariation along definite lines and Natural Selection are undoubtedly important factors of evolution—Whether or not sexual selection is a factor we are not yet in a position to d...
6. CHAPTER VI 170The theory of protective colouration has been carried to absurd lengths—It will not bear close scrutiny—Cryptic colouring—Sematic colours—Pseudo-sematic colours—Batesian and Mül...
3. CHAPTER III 52The assumption of Darwin and Wallace that variations are haphazard in origin and indefinite in direction—If these assumptions be not correct Natural Selection ceases to be the f...
2. CHAPTER II 30Brief statement of Theory—Objections to the Theory fall into two classes—Those which strike at the root of the Theory—Those which deny the all-sufficiency of Natural Selection—O...
5. CHAPTER V 133Phenomena which a complete theory of inheritance must explain—In the present state of our knowledge it is not possible to formulate a complete theory of inheritance—Different ki...
7. CHAPTER VII 297Meaning of the term—Fatal to Wallaceism—Sexual Selection—The law of battle—Female preference—Mutual Selection—Finn’s experiments—Objections to the theory of Sexual Selection—Wal...
1. CHAPTER I 1Pre-Darwinian Evolutionists—Causes which led to the speedy triumph of the theory of Natural Selection—Nature of the opposition which Darwin had to overcome—Post-Darwinian biolog...
4. CHAPTER IV 111The alleged sterility of hybrids a stumbling-block to evolutionists—Huxley’s views—Wallace on the sterility of hybrids—Darwin on the same—Wallace’s theory that the infertility o...