566 



Fig. 8. A less-developed absorbent, showing its approximate con- 

 nexion with a duct. In their simplest forms, these structures consist 

 of only two fenestrated cells, with their ends bent round so as to 

 ni3et. Such types occur in the central mass of the Turnip, where 



the vascular system is relatively imperfect. Besides the compara- 

 tively regular forms of these absorbents, there are forms composed 

 of amorphous masses of fenestrated cells. It should be added that 

 both the regular and irregular kinds are very variable in their num- 

 bers : in some turnips they are abundant, and in others scarcely to be 

 found. Possibly their presence depends on the age of the Turnip. 



