264 APPENDIX. 



75 photomicrographs from the author's original negatives, 

 and many reproductions of figures in standard works on 

 Botany. 



5. THE NOTEBOOK. 



A careful record of the work done should be kept. 

 This record should not consist merely of answers to the 

 questions asked in the Practical Studies, but, so far as 

 time permits, the pupil should be asked to make compari- 

 sons of the different plants studied, using the results of 

 his own observations and material gathered by carefully 

 reading the references given. He should be required to 

 express plainly and accurately in clear, idiomatic English 

 and in drawings the carefully thought-out results of his 

 work. The notebook, when finished, should contain a 

 consistent bird's-eye view of the plant kingdom. It 

 should be an evidence of the pupil's growth in knowledge ; 

 but, even more important than this, it should be a means 

 of training him to the correct use of English in the ex- 

 pression of the ideas he has acquired. In the writer's 

 judgment, no subject in the school curriculum affords 

 more or better material for the solution of the " English 

 problem " in the schools than such a course of botanical 

 study properly carried out. 



6. REAGENTS. 



a. Formalin. Formalin, 1 part ; water, 70 parts ; 

 enough chrome alum to give a deep green color. This 

 is one of the best preservatives. 



b. Alcohol of from 70 to 90 per cent strength may be 

 used as a preservative. 



c. Iodine Solution. Make a saturated solution of po- 

 tassium iodide in water and add as much iodine as will 

 dissolve. This is the common test for starch. It turns 

 the starch granules blue or blue-black. 



