BOTANICAL COLLECTIONS 



117 



\ \ 

 \ \ 



like the objects they represent, are of three, not two, di- 

 mensions. The latter point is, I think, of more theoreti- 

 cal than practical importance ; and proper perspective in 

 drawings, and especially in photographs, gives the same 

 result. Moreover, models are 

 far more difficult and expensive 

 to construct with accuracy and 

 truth to nature than are draw- 

 ings, and this applies particu- 

 larly to minutiae of structure. 

 Botanical models are generally 

 made of papier-mache or gela- 

 tine, sometimes of wax or glass. 

 Enlarged models of flowers or 

 other parts, which are familiar 

 to everybody in a living con- 

 dition, seem such a grotesque 

 parody of nature that they 

 inspire more amusement than 

 respect in the student, espe- 

 cially in those kinds made to 



J FIG. it. A successful box for 



come apart to show what is 



concealed within. To use such 



elaborate methods to illustrate 



facts which any one, with aid of a knife, can see in 



a minute with his own eyes seems to be carrying the 



good principle of clear illustration over the bounds 



of the useful into the ridiculous. It certainly is pos- 



\\ 



\\ 



\ \ 



\ \ 



V \ 

 \ 1 



x \ 

 \ \ 



\ \ 

 \ \ 



storage of diagrams, in cross- 

 section. The dotted lines 

 show it open. Scale, about 

 i inch = i foot. 



