ORGANIZATION OF BOTANICAL MUSEUMS. 199 



a natural picture that greatly excels the best drawing. Here 

 (Fig. 4) are flower dissections of the Larkspur already referred 

 to, which become to the student a permanent record of his 

 laboratory work. The ir- 

 regular and petaloid calyx 

 with its spurred member, 

 the irregular, reduced, and 

 partially united corolla, the 

 hypogynous stamens and 

 their protandrous phases 

 of maturing, the monocar- 

 pellary pistil and its rela- 

 tion to other parts, are all 

 demonstrated. 



Or take a small capitu- 

 lum of the sunflower. In 

 addition to half of a sliced 

 capitulum being displayed 

 in one jar, in another can 

 be suspended a mica sheet 

 with dissections. These 

 might consist of an entire 

 and sectioned ligulate 

 floret, a tubular floret in 

 the latest bud stage, an- 

 other in the expanded 

 staminate stage, still an- 

 other in the pistillate stage, 

 and one in longitudinal 

 section. They can all be 

 neatly tied on by silk 

 thread ; but a preferable 

 method would be to attach 

 them with some transparent cement that would not alter in or 

 be dissolved by alcohol. Such a cement is still a desideratum 

 with me. 



Considerable ingenuity can likewise be displayed over fruits 

 and seeds. Witness, for example, this preparation of the Thorn- 



FlG. 



