| Acquired characters, | 43 |
| After-birth, | 57 |
| Alimentary tract, | 60 |
| Allantois, | 79 |
| Amnion, | 53 |
| Amniotic space, | 51 |
| Amœba, | 12 |
| Auditory, | 69 |
| Auricles, | 73 |
| Bibliography, | 90 |
| Blastocyst, | 50 |
| Blood-vessels, | 60 |
| Body cavity, | 54 |
| Bones, | 60 |
| Brain, | 61, 67 |
| Branchial clefts, | 75 |
| Caul, | 58 |
| Cell-division, | 12 |
| Centrosome, | 13 |
| Cerebellum, | 68–69 |
| Cerebrum, | 68, 69 |
| Chorion, | 79 |
| Cochlea, | 74 |
| Conjunctiva, | 71 |
| Connective tissues, | 60 |
| Cornea, | 71 |
| Cytology, | 14 |
| Dental ridge, | 75 |
| Dental sac, | 75 |
| Ear, | 74 |
| Early development, | 47 |
| Ectoderm, | 51, 59, 60 |
| Embryology, significance, | 7, 8 |
| Embryonic area, | 51, 53, 66 |
| Enamel, | 75, 76 |
| Entoderm, | 51, 59, 60 |
| Epiblast, | 54 |
| Epidermis, | 60 |
| Eustachian canal, | 74 |
| Eye, | 65, 71 |
| Fat, | 60 |
| Fertilisation, | 18, 19, 47–52 |
| Fore-brain, | 69 |
| Germ-cells, | 16, 18, 19, 24 |
| Germ-plasm, | 11, 49 |
| Glands, | 60 |
| Hair, | 60 |
| Heart, | 54, 73 |
| Hypoblast, | 54 |
| Inborn traits, | 43 |
| Inherited traits, | 43, 45 |
| Kidneys, | 60 |
| Lens of eye, | 60, 71 |
| Liver, | 60 |
| Lungs, | 60 |
| Lymph glands, | 60 |
| Marrow, | 60 |
| Maternal blood, | 80 |
| Maturation, | 48 |
| Medulla oblongata, | 68 |
| Medullary groove, | 53 |
| Mesoderm, | 52, 59, 60 |
| Mid-brain, | 68 |
| Morula, | 50 |
| Mouth, | 60 |
| Muscles, | 60 |
| Neural canal, | 53 |
| Neural groove, | 54 |
| Nervous system, | 60, 61 |
| Nose, | 60 |
| Notochord, | 54, 60, 76 |
| Nourishment, | 57, 78 |
| Optic vesicle, | 69 |
| Origin of brain, | 69 |
| Ova, ovum, | 16, 17, 48, 49 |
| Personality, | 45 |
| Placenta, | 57, 79 |
| Primitive groove, | 53 |
| Primitive streak, | 53 |
| Recapitulation, | 84–88 |
| Reproduction, | 11, 17–35 |
| Reproductive organs, | 60 63 |
| Segmentation nucleus, | 49 |
| Sense organs, | 60 |
| Sex, | 12, 49 |
| Smell, | 70 |
| Somatic cells, | 18, 24 |
| Sperm, | 17 47, 48 |
| Spinal cord, | 53, 67 |
| Tactual sense, | 64, 65 |
| Teeth, | 60, 61 |
| Trachea, | 60 |
| Trophoblast, | 55, 56 |
| Thymus, | 60 |
| Thyroid, | 60 |
| Umbilical cord, | 55 |
| Uterus, | 56, 57 |
| Variations, | 44, 45 |
| Weight of embryo, | 83, 88 |
| Yolk sac, | 50, 53 |
Printed by Ballantine, Hanson & Co
Edinburgh & London