Xlll 



TO POULTRY FARMERS AND PRODUCE MERCHANTS: 



British Substitutes for American 

 Ouster Siieii. 



WHY BUY AMERICAN OYSTER SHELL for your 

 Poultry, when there are excellent BRITISH-MADE 

 SUBSTITUTES m the market at LO\VER PRICES ? 

 If you buy IMPORTED AMERICAN OYSTER 



shell; 



(1) You pay more tlian home -manufactured substitutes cost, 



(2) You increase your country's indebtedness to the United States of 

 America, and 



(3) You deprive some of your fellow citizens of emplo}Tnent. 



If you buy BRITISH-CRUSHED SHELL, whether 

 Oyster, Cockle or Oyster- Limpet, 



( 1 ) You save money, 



(2) You help to stabilise your country's credit, and 



(3) You give employment to your British fellow citizens. 



The Oyster-Limpet, or Slipper-Limpet {Crepidida foiTLicata), is a shellfish 

 Avhich was accidentally imported into English waters from America during the 

 latter part of last century, and has increased so rapidly that it is now a serious, 

 pest on the oyster fisheries of certain districts. 



•These Limpets, which have to be removed from the oyster grounds if the 

 latter are not to go out of cultivation, are manufactured at the Shell 

 Crushinsj Factorv at ^est Mersea, a little fishing village in Essex, into 

 AX EXCELLENT SUBSTITUTE FOR AMERICAX OYSTER SHELL. 



The shell of the Oyster-Limpet, like that of the Cockle and other 

 molluscs, is composed of the same chemical substances as the Oyster shell : 

 the only essential difterence in the manufactured product, as sold, being the 

 presence of a small quantity of flint grit, which cannot economically be 

 separated, and which is itself of value as a digestive grit for poultry. 



The shell is obtainable from agents in certain districts, and, in districts 

 where no agents have been appointed, direct from The Shell Crushing AVorks 

 of Tlie Ministry of Agriculture and Fisheries, at the following prices, f.o.r. 

 Colchester in 1 cwt. bags, for a minimum quantity of J ton : 



Coarse a7id Medium Grades ... £5 Os. Od. per ton. 



Fine Grade £4- 10s. Od. „ „ 



Smaller lots : 6s. per cwt. f.o.r., Colchester. 



Letters should be directed to Tlie Secretary, Ministry of AgHculture and 

 Fisheries, 10, Whiteliall Place, London, S.W.I. 



Terms: CASH WITH ORDER, 



Samples on application. 



