X CONTENTS 



DEVELOPMENT AND DIVISION OF LABOUR IN RELATION TO DESIGN 



PAGE 



§§ 68-69. Design a Prominent Factor in Nature — Design as seen in the Gradation of Plants and Animals and 



in the Arrangements for Walking, Swimming, and Flying ... . . 359-364 



§§ 70-71. Design as Manifested in the Growth and Reproduction of Plants and Animals, especially the 



Latter . . .... .... 367-371 



§§ 72-77. Parts Entering into the Composition of the Human Ovum— Ripening of the Ovum : Formation of 

 Polar Globules— Fertilisation of the Ovum— Reproduction in the Bird— Division of the Impregnated 

 Ovum— The Development of Membranes and Layers from which the Future Being Proceeds 377-388 



§§ 78-80. Subjects Connected with the Development of the Human Embryo and Foetus— Career of the Unim- 

 pregnated and Impregnated Ovum— Development of the Brain and Vessels of the Body — Placental and 

 Foetal Circulation — Successive Changes Witnessed in the Growing Parts . . 390-394 



§§ 81-82. Transition Links in Relation to Types— Changes in, and Pecuharities of, the Human Foetus 401-405 



§ 83. The Development of Blood, Blood-vessels, Nerves, Muscles, Bone, Lungs, Glands, Sense Organs, &c., in 



Man and Mammals . . . . 409 



§§ 84-85. Design as Witnessed in the Migration of Birds and Other Animals — Design as seen in the Production 



and Distribution of Seeds . . 415-417 



VOLUME TWO 



THE CIRCULATION IN PLANTS, IN THE LOWER ANIMALS, 



AND IN MAN 



§§ 86-87. Epitome of the History of the Circulation — Definition of the Circulation . 428-429 



THE CIRCULATION IN PLANTS 



§§ 88-90. Two Different Systems in Plants — Two Principal Sap Currents in Plants — Proof that the Saps of 



Plants Ascend and Descend .... . . 430-431 



§§ 91-93. Endosmose and Exosmose as Adjuncts of the Circulation — The Vessels of Plants : theii Function 



— Points of Resemblance between the Vessels of Plants and Animals . . . . 433-435 



§§ 94-97. Respiration in Plants and Animals — Cells of Plants : their Nature and Function — The Intra -Cellular 

 Circulation in Plants — The Lactiferous Circulation in Plants — The Forces which Produce the Circu- 

 lation in Plants . . . . . . 436-444 



§§ 98-99. Original Experiments to Show that the Vessels of Plants in Summer form Syphons — Experiments 



bearing on the Intra -Cellular Movements in Plants . 446-448 



§§ 100-102. Absorbents of Plants — Analogy between the Leaves and Roots of Plants — The Effects produced 



on the Circulation by the Swaying of Plants in the Wind : Mr. Herbert Spencer's Views 449_451 



§§ 103-106. Epitome of the Forces engaged in the Circulation in Plants — Organic Forces a Modification of 



Inorganic Forces — Motion a Condition of Matter — Circulation in Metals . 453—459 



THE CIRCULATION IN ANIMALS (Invertebrata) 



§ 107. Symmetry of Form in the Organs of the Circulation and in the Body generally . 459 



§ 108. Respiration and Assimilation connected with the Circulation . . . 4gQ 



§ 109. Cihary Currents . . . . ^gQ 



