188 CONSERVATIVE ORGANS. [LECT. IV. 



flower bulb at least is produced every season. 

 Many circumstances connected with the physi- 

 ology of bulbs might be treated of in this place ; 

 but, as I shall have again to recur to them in no- 

 ticing those bulbs which are formed on the stem, 

 and among the flowers of many plants, I shall 

 defer at present the further consideration of this 

 part of our subject. 



And being now acquainted with the forms 

 which characterize roots and their appendages, we 

 shall, in our next Lecture, finish the consideration 

 of these vegetable organs. 



