228 LE NATURALISTE CANADIEN 



This explains the lack of young lobsters in the Bay of Fundy, 

 whose waters in large part never go above 50 deg. even for a 

 short time. Thèse and other results denionstrate that certain 

 changes should be made in the lobster régulations, and that 

 rearing of the fry is necessary for the cooler of our coastal wa- 

 ters, if an adéquate supply of young lobsters is to be ensured. 



The total absence of the fry of many fishes in the Bay of Fun- 

 dy even when the eggs are spawned there has been explained by 

 other experiments. Miss E. M. Taylor, of Toronto, found that 

 the eggs of the blue perch or cunner develop successfully, hatch 

 eut into larvae, and the larvae develop until the yolk is used up, 

 if only the température of the water be high enough, as for ex- 

 ample 59 deg. or 63 deg. F. But at 50 deg. the eggs develop very 

 slowly, and though they may hatch out, the larvae rapidly perish. 

 This explains why the cunner is found in Passamaquoddy bay 

 only as individuals of relatively enormous size, which must be 

 very old and hâve in the course of years wandered from their 

 successful breeding grounds such as St. Mary bay, N. S., where 

 the température is (at the he^d of the bay) high enough 

 for the eggs and fry to survive at least in favourable years. 

 Like those of the cunner, the eggs of the rockling and witch are 

 spawned in the Bay of Fundy, but none of the larvae are ever 

 found. We hâve recently taken thèse eggs from the bay and 

 found no difïiculty in hatching them and rearing the larvae 

 until the yolk was used up if only the température were raised 

 to about 60 deg. At 50 deg., however, though some might hatch, 

 they were usually misshapen and perished. 



Must Juin Forces 



The importance of the scientist and the man in the fisheries 

 getting into touch with other so that important économie ap- 

 phcations may come from the scientist's investigations, has 

 many times been emphasized. It will be abundantly évident, 

 from the outline just given of the work donc in connection with 

 the Atlantic Biological Station, that the scientist is in touch 

 with problems of vital économie interest and that he is solving 



