HARDWICK&S SCIENCE-GOSSIP. 



*33 



shell so thick as that of the latter. Moreover, C. 

 elegans with a shell of remarkable thickness burrows 

 deep. 



Similarly with regard to aquatic species — how deep 

 do they burrow ? I have scooped away the whole of 

 the mud (of three or four inches in depth) from the 

 bottoms of small ponds and ditches, which in summer 

 swarmed with unios, limnaaa, etc., and finding 



ILLUSTRATIONS OF VEGETABLE 

 TERATOLOGY. 



THE word " Teratology " is an exceedingly 

 appropriate one, signifying as it does the 

 "Science of Monstrosities." We have seen that 

 modern botany has withdrawn all these "breaks," 

 "sports," etc., from the domain of accident or 



Fig. 78. — "Monstrous" var. of Dancas carota. 



nothing, have come to the conclusion that they 

 burrow below the mud in the subsoil. 



This question I hope to settle some day, for a 

 solution must be forthcoming if one only digs and 

 scoops deep enough. 



L. E. Adams. 



chance, and included them in the realm of law. 

 Nay, more, as has before been remarked, many, if 

 not all, of these deviations from ordinary morphology 

 may throw light upon the history of orders and 

 genera, if not also of the specific forms of plants. 

 Mr. Edward Buckell sends us two capital sketches, 



