CCvi PROCEEDINGS OF THE ROYAL HORTICULTURAL SOCIETY. 



aquatic Dicotyledons, as Eanunculus aquatilis, Trapa, Ceratophylluniy 

 Victoria regia &c. Such proved to be the case with the Mustard. The 

 conical extremity of the root became brown and died, while strong 

 secondary roots with root-hairs arose from the pericycle just above the 

 dead apex. Experimental verification thus corroborated the above 

 induction. 



