[25] OYSTER CULTURE IN MORBITHAN. 967 
and the edges, so that when the edges are scraped off, the entire concave 
surface can be removed, without damage to the adhering oysters. 
“Tf the paper is not spoiled, it can be used a second time, or it may be 
replaced by the large leaves of some plant. 
“The collector with a removable coating, applied to the industry at 
Areachon, will offer the following advantages: it will prevent a loss of 
20 per cent. and much labor may be dispensed with. The cement, 
bearing the young, may be transferred directly to the claires, without 
passing through the boxes. The oysters will grow and the cement may 
be easily broken into pieces, even with the hand.” 
It is useless to insist further upon the practice of liming; we have 
stated the principle and supported it by several illustrations. 
At Morbihan, it is easy, in all cases, to settle whatever difficulties may 
arise. The question has been studied, and the path to be followed 
clearly pointed out. 
Arrangement of the collectors and of the breeding parks.—We have 
reviewed the system of collectors and of coating the tiles; it is now in 
order to say something about the arrangement of the collectors and of 
breeding parks in general. 
One principle also governs this question, and imposes itself upon each 
culturist. It is the transportation of mud in rivers, which are influ- 
enced by the tides. The culturists of Morbihan study the eurrents and 
the deposition of mud; they arrange their collectors along the shore in 
such a manner as to prevent their being covered up with mud, during 
the period when they remain in place. The principle being understood, 
the question of application is determined in each case by observation, it 
being impossible to formulate any general rule. 
We will state, however, that the majority of culturists arrange their 
collectors in rows, at right angles to the shore. This system, which pro- 
duces a sort of dam opposed to the current, must be modified in a cer- 
tain measure, so as not to offer too much resistance to the general cur- 
rent. It might, perhaps, be preferable to arrange the collectors in rows 
parallel to the channel; this is an experiment yet to be tried. We 
repeat that the culturists of Morbihan pay considerable attention to the 
action of those natural forces, which produce the currents and the depo- 
sition of mud. In proof of this, we have only to refer to the judicious 
observations of Dr. Gressy. 
“The ‘bouquet’ collectors, whether of tiles or of thin boards, when 
placed near together, will cause a deposit of mud in the parks, by rea- 
son of the obstacles which they oppose to the current. 
‘To obviate this inconvenience, I was the first to originate the idea 
of grouping the bouquet collectors in series of three rows each, placed 
in juxtaposition. Between each series I left a space of from five to six 
feet, so as to permit the current to flow freely, and by the force of the 
rising and ebbing sea to sweep out the deposit of mud, which might ac- 
cumulate among the collectors in calm water. This system is univer- 
sally followed in our river. 
