APPENDIX 409 



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 appli- 

 cation of principles demonstrated. Discuss sterilization in medicine and 

 surgery, cold storage, canning, sterilization, e.g. laundries, etc., use of anti- 

 septics, 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 dis- 

 eases 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. Distinc- 

 tion between vertebrate and invertebrate. Character of mammalia. Divi- 

 sion of labor emphasized. Man's place in nature. 



Fourth week. Study of the Frog. Relation to habitat, adaptations for loco- 

 motion, 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 differ- 

 entiation emphasized. Touch on plant and animal breeding. Function 

 of chromosomes as bearers of heredity. Comparison of bird's egg and mam- 

 mal 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, (6) 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. 



Eighth week. Need for Food. Nutritive value of food. Use of charts to show 

 foods rich in carbohydrates, fats, proteins, minerals, water, refuse. The 

 relation of age, sex, work, and environment to the food requirements. What 

 is a cheap food. Price list of common foods at present time. Efforts of 

 government to secure a cheap food supply for the people. Digestibility of 

 foods. 



