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4- Food tests (starch, proteid, fats, and sugar) in all seeds 

 studied (in class). 



5. On response of roots to gravity. 



6. On response of stems to gravity. 



7. On conducting region of root. 



8. On conducting region of stem. 



9. Osmosis experiment to show the importance of water for 

 rigidity of root (performed on carrot). 



10. On positive phototropism of stem. 



11. To prove that CO, is evolved by growing seeds (with lime 

 water). 



12. To prove that seeds use up oxygen in germinating. 



13. To show transpiration. 



14. 15. To show the functions of the veins of the leaf. 

 16. Etiolation experiment. 



It seems to me that the qualitative side is all that we can profit- 

 ably insist on in our high school course. I do not lay very much 

 stress on the quantitative side, and doubt whether the concep- 

 tions of time and amount as applied to botany have very great 

 value for pupils of this age. 



L. S. Hawkins, Cortland, New York. — It seems to be advisable 

 to take up the plant as a biological unit and in so doing to consider 

 the general conditions governing the germination of seeds and the 

 growth of seedlings. In this way we try to make the work, as 

 far as possible with the apparatus at hand, quantitative. This work 

 is followed by a series of experiments with the growth and func- 

 tion of the vegetative organs. I have tried two methods of 

 having the experiments done, (i) Each student did each ex- 

 periment. (2) One student from a group did one or more ex- 

 periments and reported the results to the members of the group. 

 In each case the results of the experiment were exhibited in the 

 laboratory as material for demonstration of the explanation of the 

 experiment. I find that the individual method is by far the more 

 satisfactory. The number of pupils being so great in comparison 

 to the room we have, we are obliged to have the experiments 

 done at home and the results brought to class. I will enclose 

 the list of experiments which represents the work done along the 



