10 INTRODUCTION. 



to obtain an adequate idea of the normal environment of 

 the plants under consideration. If in connection with the 

 work, instructor and students who can do so, will make 

 and preserve photographs of different phases of plant life, 

 each laboratory will soon possess a collection that will add 

 much to the general knowledge of the forms studied. l 



Laboratory notes need not be extensive, but should be 

 clear and definite, and by means of the descriptions con- 

 tained in them and by their constant reference to draw- 

 ings, should constitute a brief presentation of the impor- 

 tant features of the particular plant in question. The 

 laboratory notes should be made up in the main of things 

 the student has learned during his study of the plants them- 

 selves. Field notes may well be included with laboratory 

 notes, but both of these should be kept separate from 

 those made in connection with lectures, recitations, and 

 readings. 



4. Reference reading. Throughout the outlines occa- 

 sional references are made to sources of information upon 

 topics in hand. It will not always be possible for the 

 students to look up these references, and they by no means 

 include all that should be read. Access should be had to 

 some good magazines, such as the Botanical Gazette, 

 Bryolo gist, Journal of Applied Microscopy, 2 Plant World, 

 Rhodora, Torreya, Bulletin oj the Torrey Botanical Club, 

 and the Journals of the New York Botanical Gardens. 



If the following books are available in the library, the 



1 These photographs may be made into lantern-slides, or slides may 

 be purchased that will illustrate details of plant structures and eco- 

 logical relations of plants. 



2 The publication of this journal has been discontinued, but the back 

 numbers may be obtained, and are especially helpful. 



