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508 Proceedings. 
qualities entire, but that the artificial means of incubation provided under 
the new system completes the process more quickly and more surely than 
when left to their natural course ; in fact, two growths are obtained within 
the space of one ordinary breeding season. ‘This double result enables the 
Government to make the scheme self-supporting, because the proprietors 
are ready to pay for the choice sorts of fish put at their disposal. The 
locality of the establishment at Huningue, upon the canal above mentioned, 
is then described, with the process of depositing the ova, as formerly given 
in our columns. A spring of remarkably clear water flows through a com- 
monty of a few acres extent. In its course it divides itself into several 
smaller streams, into which the boxes are placed, with wire-cloth ends 
through which the water flows, leaving the ova and young fish in a constant 
running stream. This work M. Coste purposes to enlarge, substituting 
planks of wood laid lengthways in parallel divisions for the wire-cloth boxes, 
which are liable to choke up ~ enclosing the spring with a series of straight 
furrows, along which the water will precipitate itself, Certain obstructions 
like sluices are placed at intervals in these furrows, to regulate the current 
and to keep the water in proper condition for the object in view. These fur- 
rows extend along the meadow and empty themselves into a spacious basin, 
where the young spawn will be first received. Over this basin something 
like a greenhouse is to be erected, with shifting glass windows, to admit the 
sun and air. Attached to this will be an outhouse, or laboratoire, where a 
register of the weather, and observations on the natural history of the fish 
during their incubation and childhood, may be preserved, 
When the peried of infancy is passed, the next object is to provide ponds 
where the different species may have the means of attaining mature growth, 
or where experiments im crossing the breeds may he carried on. M. Coste 
Proposes that a chain of fish-ponds should be dug along the banks of the 
canal, the land of which, for about fifteen metres on each side, belongs to 
Government. These ponds may be extended to any length, and communi- 
cate with each other by means of gates of wire or ironwork. When of 
sufficient growth to stand transportation, the canal with which these ponds 
communicate will be the natural channel through which the fish would be 
carried to the different rivers in France. This is to be effected by boxes 
attached by rings to rafts, the boxes to contain a sufficient quantity of 
water-plants to prevent the young fish being injured. These boxes 
can be detached from the raft at the openings to the fish-ponds, just as 
awaggon is left on a siding onarailway. The details of these operations 
we need not give, as they could not be well understood without diagrams. 
Suflice it, that the personnel of the bridges and roads are to do the whole 
work of the transmission of the fry from pond to pond, and along the” 
canal; and that the yearly expense is calculated at no greater sum than 
-8,000f, after the first year. The report concludes with the result of 
M. Coste’s experiments on the propagation of shell fish, equally successful 
With that of fresh water fish. 
The subject is far from being entirely new in this country; for Mr. 
Young, who has charge of the Duke of Sutherland’s rivers in_the north, 
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