408 APPENDIX 



Sixth week. NEED FOR FOODS. Germination of bean due to (a) presence of 

 foods, (6) outside factors. What is done with the food. Release of energy. 

 Examples of engine, plants, human body. Oxidation in body. Proof by 

 experiment. Test for presence of COz. Oxidation in growing plant, experi- 

 ment. Respiration a general need for both plants and animals. 



Seventh week. NEED FOR DIGESTION. The corn grain. Parts, growth, food 

 supply outside body of plant, how does it get inside. Digestion, need for. 

 Test for grape sugar. Enzymes, their function. Action of diastase on starch. 



Eighth week. WHAT PLANTS TAKE FROM THE SOIL, How THEY DO THIS. Use of 

 root. Influence of gravity and water. Why? Absorption a function. 

 Root hairs. Demonstration. Pocket gardens, optional home work, but each 

 pupil must work on root hairs from actual specimen. How root absorbs. 

 Osmosis ; what substances will osmose. Experiments to demonstrate this. 



Ninth week. COMPOSITION OF SOIL. What root hairs take out of soil. Plant 

 needs mineral matter to make living matter. Why? Nitrogen necessary. 

 Sources of nitrogen, the nitrogen-fixing bacteria. Relation of this to man. 

 Rotation of crops. 



Tenth week. How GREEN PLANTS MAKE FOOD. Passage of liquids up stem. 

 Demonstration. Structure of a green leaf. Cellular structure demonstrated. 

 Microscopic demonstration of cells, stoma, air spaces, chlorophyll bodies. 

 Evaporation of water from green leaf, regulation of transpiration. 



Eleventh week. Midterm Examinations. Sun a source of energy. Effect of 

 light on green plants. Experimental proof. Starch made in green leaf. 

 Light and air necessary for starch making. Proof. Protein making in 

 leaf. By-products in starch making. Proof. Respiration. 



Twelfth week. THE CIRCULATION AND DISTRIBUTION OF FOOD IN GREEN PLANTS. 

 Uses of bark, wood, what part of stem does food pass down. Willow twig 

 experiment. Summary of functions of living matter in plant. Forestry 

 lecture. Economic uses of green plants. Reports. 



Thirteenth week. PLANTS WITHOUT CHLOROPHYLL IN THEIR RELATION TO MAN. 

 Saprophytic fungi. Molds. Growth on bread or other substances. Con- 

 ditions most favorable for growth. Favorite foods. Methods of pre- 

 vention. Economic importance. 



Fourteenth week. YEASTS IN THEIR RELATION TO MAN. Experiments to show 

 fermentation is caused by yeasts. Experiments to show conditions 

 necessary for fermentation. The part played by yeasts in bread making, 

 in wine making, in other industries. Structure of yeast demonstrated. 

 Summary. 



Fifteenth week. EXPERIMENTS TO SHOW WHERE BACTERIA MAY BE FOUND AND 

 CONDITIONS NECESSARY TO GROWTH BEGUN. Have cultures collected 

 and placed in a warm room during the holidays. Suggested experiments 

 are exposure to air of quiet room and room with persons moving, dust of 

 floor, knife blade, etc. 



Sixteenth, seventeenth, and eighteenth weeks. THE MONTH OF JANUARY SHOULD 



BE DEVOTED TO THE STUDY OF BACTERIA IN THEIR GENERAL RELATIONS 



TO MAN. Economically, both directly arid indirectly. Especial emphasis 

 placed on the nature and necessity of decay. Bacteria in relation to disease 

 should also be emphasized. The experiments to be performed and the 

 topics expected to be covered follow. 



