160 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



A. Tube conical. B. Tube funnel-shaped. 



1. Cells round (axile or abaxile). (Similar divisions and subdivisions 



a. Calyx divergent. in this group.) 



b. „ erect convergent. 



c. „ flat convergent. 

 (1. „ connivent. 



2. Cells ovate (axile or abaxile). 

 Subdivisions as in 1. 



3. Cells obovate (axile or abaxile). 

 Subdivisions as in 1. 



4. Cells elliptical (axile or abaxile). 

 Subdivisions as in 1. 



Under this method the number of sections would be reduced from 192 to 

 32, which would be a step in the direction of simplification, and would 

 also facilitate the identification of the varieties. 



This example of the diversified and interesting material which fruits 

 furnish to students must suffice to conclude these notes, the principal 

 object of which has been to indicate the directions investigators may take 

 who wish to pursue the subject with pleasure and profit. 



