CONDITIONS FAVORABLE AND UNFAVORABLE FOR GROWTH OF BACTERIA. (Use bouillon cultures.) Effect of intense heat, sterile bouillon exposed to air, effect of boiling, effect of cold, effect of antiseptics (corrosive sublimate, carbolic acid, boric acid, formalin, etc.), effect of large amounts of sugar and salt and the relation of this to preserving, etc. Bring out practical application of principles demonstrated. Discuss sterilization in medicine and surgery, cold storage, canning, sterilization, _e.g._ laundries, etc., use of antiseptics, preserving by means of salt and sugar. Microscopic demonstration of bacteria. Methods of reproduction. Importance in causing organic decay, fixation of nitrogen, various useful forms in cheese making, butter ripening, etc. Harmfulness of bacteria as disease producers. Specific diseases discussed: tuberculosis, typhoid, infective colds, blood poisoning, etc. Vaccination. Antitoxins begun--continued after knowledge of human body is gained. Work of Lister and Pasteur. Nineteenth and twentieth weeks. REVIEW AND EXAMINATIONS. SECOND TERM First week. THE BALANCED AQUARIUM. Carbon and nitrogen cycles. Balanced aquarium and hay infusion compared. Second week. ONE PROTOZOAN, DEMONSTRATION TO SHOW CHANGES IN SHAPE, RESPONSE TO STIMULI, SUMMARY OF VITAL PROCESSES IN CELL. Food getting, digestion, assimilation, oxidation, excretion, growth, reproduction. Internal structure of protozoan. Protozoa as cause of disease. Third week. GENERAL SURVEY OF ANIMAL KINGDOM. Survey introduced by museum trip if possible. Protozoa, worm, insect, fish, mammal. Distinction between vertebrate and invertebrate. Character of mammalia. Division of labor emphasized. Man's place in nature. Fourth week. STUDY OF THE FROG. Relation to habitat, adaptations for locomotion, food getting, respiration, comparison of frog and fish on latter point. Osmotic exchange of gases emphasized. Cell respiration. Fifth week. METAMORPHOSIS OF FROG. Fertilization, cell division, and differentiation emphasized. Touch on plant and animal breeding. Function of chromosomes as bearers of heredity. Comparison of bird's egg and mammal embryo. Sixth week. FACTORS IN BREEDING. 1. Variation. 2. Selection. 3. Heredity fixes variation. 4. Hybridizing. 5. Control of environment. Eugenics in relation to (_a_) crime, (_b_) disease, (_c_) genius. Continuity of germ plasm. Work of Darwin, Mendel, De Vries, Burbank. Seventh week. A BRIEF STUDY OF THE GROSS STRUCTURE OF THE HUMAN BODY. Skin, muscles, bones. Removal of lime from bone by HCl to show other substances and need for lime. Effect of posture, spinal curvature, fractures, sprains.