782 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



under their tails. The young crawfish which he had last year raised in 

 his basin were in great demand, and fishermen paid $5 a thousand. 

 He was doubtful whether it would be profitable to raise crawfish in 

 ponds till they had reached their full size, but he recommended to place 

 the young ones in open lakes. 



Mr. von dem Borne remarked that he kept crawfish in a basin whose 

 walls were cemented. It is 12 feet long and 1 foot deep. He had ob- 

 served the male crawfish copulate with the female, and had then seen 

 the female lay eggs. Some females had, from some unknown cause, not 

 laid any eggs. 



The great crawfish establishment of Mr. Micha, in Berlin, was men- 

 tioned, and Mr. Kuffer remarked that he also kept crawfish all winter 

 through. He buys them in September and October, and feeds them 

 with the entrails of fish, which the crawfish like. In the beginning they 

 ate a great deal and finally got quite fat. 



