226 LE NATURALISTE CANADIEN 



Summerside, P. E. I., lias worked out the abundance of the 

 smelt fry in the Magaguadavic and the St. Croix rivers and also 

 the hfe history of one of the two kinds of smelt in Lake Utopia, 

 which is connected with the Magaguadavic, thèse things being 

 necessary in connection with the problem. It is expected that 

 means will be found to make the smelt fishery of considérable 

 value along sections of the coast, where at présent it is of no 

 moment. 



FisH Raising 



When we speak of fish culture, vve do not mean as much as 

 when we say plant culture or stock raising. Fish culture in 

 nearly every case has meant merely the getting of the eggs, the 

 caring for them until they hatch out, and the libération of the 

 fry. No attempt is made in most cases to care for the fish (pro- 

 vide them with suitable food and protect them from enemies) 

 during the critical fry stages and during the lator ùiiportant 

 growing period. Such a venture bristles with difhculties, but 

 the time is coming when it will and must be donc. Prof. A. B. 

 Klugh, of Kingston, Ont., has undertaken extensively experi- 

 ments in cultivating a séries of plants and animais that can be 

 usedfor the food of f resh-water fish. Hehas already succeededin 

 growing experimentally both microscopic plants that form the 

 living basis for fish food, and also the small shrimp that live 

 upon thes(^ plants, and that serve themselves as the food of 

 fishes or of other animais eaten by fishes. When success has 

 been obtained in the controlled growth of ail the éléments in 

 such a necessarily long " food chain ," it will be possible to 

 raise fish in as certain and efficient a fashion as cattle are raised 

 onafarm. 



Growth of Shellfish 



For the shellfish that do not move about and that can be plan- 

 ted, as for example the oyster, no matter is of greater impor- 



