298 



Shell-fish. 



great ease by the women and 

 ren. They are not to be despii 

 this country while similar ai 

 of food are prized in Englam 

 France. There is a growing de 

 in England for limpets and 

 winkles, from 150 to 250 bush 

 periwinkles being sold in a d 

 London alone. A farm for the 

 ficial propagation and sale of i 

 mussels has been worked for 

 centuries in France, and it musl 

 been profitable or it would sce 

 be in existence. But whether 

 shell-fish can be artificially pro] 

 ed, or in any way protected at a 

 periods, with advantage, is a b 

 yet to be ascertained. The Ve 

 which is the most numerous, and the most subst 

 eating, and is eaten also in Japan, has no byssus \ 

 with to attach itself; and the mark on one side 

 that it lies on the mud with one edge upwards, 

 method followed for propagating oysters and m 

 would therefore seem inapplicable. 



Nerita. 



Corbicula ; one of 

 the species found with- 

 in tidal influence, and 

 two others in the fresh 

 water. 



Velorita cyprinoi- 

 des (Gray) of the fami- 

 ly Cyrenidce. 



Unio. 



Limnea stagnalis. 



Ampullaria glauca 

 L. 



Planorhis Indicus. 

 „ Coroman- 

 delina. 



Paludina bengal- 

 ensis. 



Practical Water- 

 farming, by William 

 Peard, m. d., ^. l,. a., 

 Page 239, 241. 



Sea Fisheries. 



110. The observations hitherto made in this 

 have had reference only to the rivers. But the sea 

 ies of this district are more fruitful and more impc 



