870 bulletin of the bureau of fisheries. 



r6sum6 and conclusion. 



The results obtained by us at the marine laboratory of St. Vaast-la-Hougue 

 during the summer of 1907 are in brief the following; 



(i) After Messrs. Malard and Dantan we obtained natural, normal, and 

 abundant hatches of turbot, a result which had been sought for twenty years 

 in a great number of other marine laboratories. 



(2) We were the first to succeed in carrying the larvae of this pleuronectid 

 through the critical period, the obstacle which hitherto all the naturalists study- 

 ing pisciculture had been unable to overcome, and which seemed to be the prin- 

 cipal rock in the course of marine pisciculture. 



(3) Throughout our work the mortality of the larvae may be said to have 

 been a negligible quantity (about 10 per cent). 



