1112 



U. S. BUREAU OF FISHERIES 



On a siii<rle oyster shell having an average of approximately 20 

 square inches of surface, there rarely can be produced more than 

 25 or 30 year-old seed oysters, regardless of whetlier the original set 

 numbered 100 or 1.000 si)at per shell. However, the same amount of 

 surface on the i)artition collector is cai)able of producing from 200 

 to 400 seed oysters, or approximately 15 times as nian}^ per square 

 inch as can be grown on the shells. 



With a set averaging 50 spat per square inch, as was obtained in 

 South Bay, thei-e is a U)ss of over 98 i)er cent on the shells and only 

 70 per cent on the collectors. A single representative collector taken 

 from South Bay in Se])t('mber yielded by actual count 13 200 single 

 seed oysters or the equivalent of what could be produced on a bushel 

 of shells. By separating the seed oysters from the collectors when 



FiGUiiE 10. — ("ardbfianl s'>p(1 nvKlor coUoctors, rtoveloppd by l)uroaii iin'( sti,'.;;ttiiis. 

 sliowing iit.'JO set in Long Island Sound 



they are a few months old it is [)()ssible to get a nnicli larger and 

 better shaped year-old oyster than can be grown from sets obtained 

 on shells. 



The new type collector can be planted directly over the shells and 

 will greatly increase the ])ro(luctivity of such oyster-setting bottoins. 



>'KW ENGLAND 



Studies in oyster culture in Xew England, cari-ied out by H. F. 

 Prytherch, were conducted from the headciuarters established at Mil- 

 ford, Conn., and extended to Long Island Sound and Great Soutli 

 Bay, X. Y. 



kimrnxinfi and setthif/ of oystem in Long /slond Sound. — Since 

 the production of ^eed oysters in Long Island Sound has been shown 



