IN THE UNITED KINGDOM AND FRANCE. 11 



Figures 3, 4, 5, exhibit oyster spat viewed in various positions. 



Fig. 3 Black Spat, as viewed from the surface of the water when floating. 



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G.W.H. 



Fig. 4. — Black Spat greatly magnified. 



G.W.H 



Fig. 5. — White Spat greatly magnified. 



G.W.H. 



