118 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



H— Collection illustrating Oyster and Mussel Culture 

 in France, Holland and other Countries. 



H. I. Oyster Culture at Arcachon (south of France). 



1. Pieces of tile used as Collectors of Spat, show- 



ing the thickness of the limy covering. 



2. Two tiles covered with the limy layer ready 



for placing in the pares as collectors. 



3. Model of the " gabaret " or case of collecting 



tiles. 



4. Two tiles covered with young spat. 



5. Two tiles covered with young oysters 1 year 



old. 



6. Series of specimens of young Ostrea edulis 



(common Oyster) 1 year old. 



7. Series of specimens of young Ostrea edulis 



(common Oyster) 2 years old. 



8. Series of specimens of Ostrea edulis (common 



Oyster) 3 years old. 



9. Series of specimens of young Ostrea angulata 



(the Portuguese Oyster) 1 year old. 



10. Series of specimens of young Ostrea angulata 



(the Portuguese Oyster) 2 years old. 



11. Series of specimens of Ostrea angulata (the 



Portuguese Oyster) 3 years old. 



12. Series of photographs of the oyster culture 



at Arcachon. 



H. II. Oyster Culture at Ierseke, Zeeland, Hol- 

 land. (From Mr. Harmelen, Ierseke.) 



1. Map of the Ooster Scheldt showing position 



of Oyster beds. 



2. Photographs of the Oyster culture at Ierseke. 



3. Two tiles with young oysters in first year. 



