xi 



TO POULTRY FARMERS AND PRODUCE MERCHANTS: 



British Substitutes for American 

 Ouster Siieil. 



WHY BUY AMERICAN OYSTER SHELL for your 

 Poultry, when there are excellent BRITISH-MADE 

 SUBSTITUTES in the market at LOWER PRICES ? 



If vou buy IMPORTED AMERICAN OYSTER 



shell; 



(1) You pay more than 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 employment. 



If you buy BRITISH-CRUSHED SHELL, whether 

 Oyster, Cockle or Oyster- Limpet, 



(1) Y»r savre money, 



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



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



The Oyster-Limpet, or Slipper-Limpet (Crepididafornicata), is a shelltish 

 which w^as accidentally imported into English waters from America duruig 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 

 Crushing factory at West Mersea, a little fishing village in Essex, into 

 AX EXCELLENT SUBSTITUTE FOR AMERICAN 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 difference 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 Works 

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

 Colchester in 1 cwt. bags, for a minimimi quantity of | ton : 



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



Fine Grade £^ 10s. Od. „ „ 



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



Letters should be directed to The Secretary, Ministry of Agriculture and 

 Fisheries, 10, Whitehall Place, Lomlon, S. W.l. 



Terms: Q\m WITH ORDER. 



Samples on application. 



