ANATOMICAL TECHNIQUE 469 



be used for making prints for reproduction in scientific journals. 

 The smooth, glossy surface renders this type of paper more suit- 

 able for purposes of reproduction than the more artistic papers 

 with matt or rough surfaces. 



Photomicrography is an art which can be learned only in part 

 from books, and the beginner is advised either to visit some lab- 

 oratory where it is successfully carried on, or, failing that, to seek 

 direction from a professional photographer, having regard in that 

 case to the special conditions involved in photomicrographic tech- 

 nique. The account given above is from limitation of space neces- 

 sarily incomplete and has been written only to supply some answer 

 to numerous inquiries as to the methods pursued in the laboratories 

 of plant morphology in Harvard University. 



