_The Greatest Life_. By Gerald Leighton, M.D., F.R.S.E. (London. Duckworth.) This work deals with the development of character (as well as structures) from the biological point of view. The argument is that the _whole_ of a man, mental, moral, spiritual, as well as what is usually termed physical, develops in accordance with biological laws. _Text-books on Physiology_. Any of the standard books will be found to contain accounts of the early development of the embryo and its various tissues. INDEX Acquired characters, 43 After-birth, 57 Alimentary tract, 60 Allantois, 79 Amnion, 53 Amniotic space, 51 Am[oe]ba, 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 * * * * * The table below lists all corrections applied to the original text. p 25: the rest are -> The rest are p 35: Natural Selection." -> closing quotes added p 60: alimentary tract. -> period added