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 NOTES AND BIBLIOGRAPHY 37. A like need impelled Immanuel Kant to conceive a metaphysical scheme, suited to his apprehension of the natural universe. 38. De Gen. An., I. i. (715 a.) 39. This passage unconsciously suggests that possibly the motor or even the final cause lay implicit in the reasonings of the old philosophers. Elsewhere Aristotle says: " The ancient Nature- Philosophers . . . did not see that the causes were numerous, but only saw the material and effi- cient, and did not distinguish even these, while they made no inquiry at all into the formal and final causes." De Gen. An., V. i. (778 b.) 40. All of these passages are from De Partibus Ani- malium, I. i. (640 b. ff.) 41. De Gen. An., I. i. (715 b.) 42. The " heterogeneous " parts; see Ante. It is Bichat's (1771-1802) distinction between tissues and organs. 43. De Partibus Animalium, II. 11. (646 b.) 44. De Partibus Animalium, IV. 10. (687 a.) 45. De Gen. An., V. i. (778 a.) and the notes of the translator. 46. De Gen. An., II. 3. (736 a.) and see the trans- lator's note to the passage. 47. This very attractive generalization is not to be pressed too far. 48. Hist. An., VIII. I. (588 a.) 49. De Gen. An., I. 18. Darwm held to a theory of pangenesis, but it is not commonly accepted. 50. Hist. An., VIII. 2. (589 b.) 51. Hist. An., VIII. 12. (596 b.) 52. Collected in E. H. F. Meyer's Geschichte der Botanik, Konigsberg, 1854-57; I- 88 ff. 53. Sir Arthur Hort, see n. 24. 54. Of which Meyer, o.c, gives a synopsis, I. pp. 167 £f. 55. Julius von Sachs, History of Botany, 153&-1860, Translation by H. E. F. Garnsey, Oxford. 1890; examples, pp. 17, 42, 376, 450. 56. Enquiry, I. i. 9. 57. Ibid., I. I. 4. The last clause in the last sentence is [ 149]