554 OYSTERS, AND ALL ABOUT THEM. 



Vannes river ; the number of the spat adhering to each is 

 estimated, according to the locality, at 30 to 60. 



Among the special establishments which have been 

 founded in the vicinity of Vannes, I shall mention that of 

 MM. Duchelas & Co., on the Isle of Bailleron, which has, 

 for dependencies, two pares on the Isle of Lerne and the 

 Isle of Illure, and those of MM. Chaumel, Vincent and 

 Liazard, and de Lamazelle and Paul. 



Five thousand tiles were put down as a trial by M. 

 Duchelas & Co., in the neighbourhood of the banks of 

 Bernon and of Bailleron. 



ESTABLISHMENT OF M. Pozzi. 



The establishment which M. Pozzi organised at Ludre, 

 with the aid of M. Dalido, in 1874, may be classed among 

 the best in Brittany. It is situated near Sarzeau, in the 

 Gulf of Morbihan. It comprises : ist, preserve pares of 

 an area of 5 hectares, which are old salt-marshes trans- 

 formed ; 2nd, a discharge reservoir ; 3rd, two submersible 

 basins. It has for dependencies pares for rearing and 

 laying at the Isle of Kistinie and the Isle of Lerne. The 

 basins meant for preserving oysters during the winter are 

 fed on one side by a great pond of 40 hectares, receiving 

 water at every tide, excepting neap-tides ; and pn the 

 other by a flood-gate, which allows passage for the rising 

 tide, and by which the water is let out when the basins are 

 emptied. 



The soil is composed of mud and sand, but is generally 

 firm. 



The system which has been adopted by M. Pozzi as 

 the basis of the works in connection with the rearing of 

 the oyster is the system of continuous currents. This was 

 suggested to M. Pozzi by the conditions in which the 



