APPENDICES 1471 



urchin. The egg-cells and sperm-cells. Maturation, fertilisation, and 

 segmentation. The significance of larvae. Comparison of a number of 

 life-histories, e.g. jellyfish, earthworm, crab, butterfly, sea-urchin, and 

 pond-snail. Alternation of generations. 



6. A number of Vertebrate types selected to illustrate particular 

 points, e.g. homologies, based on a thorough comparison of such 

 skeletons as those of birds and mammals; the differentiation of the 

 food-canal and its outgrowths; the everyday functions of the body: 

 the regulatory system and the evolution of the ductless glands ; different 

 modes of reproduction, leading up to mammalian viviparity. The evolu- 

 tion of sense-organs and brain. 



7. The fact of evolution. The evolving organisms and the evolving 

 system of interrelations. Illustrations from the past and the present. 



B. — Special Part. 



8. The Study of important parasites and their life-histories, e.g. 

 Trematodes, Tapeworms, and Nematodes, with particular emphasis on 

 forms like the species of Bilharzia and Hookworm. Insects and Acarines 

 as carriers as well as parasites. Return to Protozoon parasites. Illustra- 

 tions of the Web of Life and man's share in it. 



9. History of the germ-cells. The principles of Genetics. Mendelian 

 Inheritance. Reversions. The concept of Unit-Characters. Heredity and 

 disease. Hormones and Heredity. 



10. Experimental Embryology. Influence of Nurture on the develop- 

 ment of hereditary nature, modern experiments bearing on this. Influ- 

 ence of changes in habits and surroundings ; how far of racial significance. 

 Question of the transmission of "acquired characters" or somatic 

 modifications. 



11. Brief comparative study of sex and reproduction. Sex dimor- 

 phism at various levels in the animal kingdom. Gonadial or sex hor- 

 mones. Darwin's theory of sex-selection and its modern form. 



12. The factors in evolution brought togther. Fluctuations and 

 Mutations, Selection, and Isolation. 



The practical work of three kinds : (a) Manipulative exercises in dis- 

 section and microscopic technique; (6) as a discipline in precision — a 

 very thorough study of particular things, e.g. dog's skull, bird's 

 skeleton, brain of skate, eye of ox, appendages ol crustacean and 

 insect; and (c) direct illustrations of what has been discussed in the 

 lectures. 



[b] INTRODUCTORY ZOOLOGY 



A Course for Arts and Science Students 

 About 100 Hours, of which 50 are devoted to Practical Work 



I. General Survey of the Animal Kingdom. The characteristics of 

 the great classes. Structure, function, habits, life-histories, and inter- 

 relations of a series of types and groups, e.g. Amoeba, Paramoecium, 

 Sponge, Hydra and the Hydroids, Medusae, Sea-Anemones and Corals, 



