THE TUEBOT AND TURBOT CULTURE 6 



3/ 



Concarneau in Brittany. Then in 1905 Malard and Dantan at 

 St Vaast-la-Hougue succeeded in hatching turbot, but failed, 

 Hke Fulton, to carry the fry through the critical period immedi- 

 ately following the disappearance of the yolk-sac. Finally, in 

 1907, Dr. R.Anthony, Assistant Director at St. Vaast, triumphed, 

 and he described his method to the Fourth International 



Fig. 5. APPARATUS FOR HATCHING TURBOT. (Modification of 

 apparatus of Fabre-Domergue and Bietrix.) 



a and 6, wads of cotton to prevent oil entering barrel along vertical glass 

 rod g ; c, upturned cover which serves as dust shield ; d, inlet pipe ; e, outlet 

 pipe with screened funnel entrance ; /, revolving disk ; g, vertical glass rod 

 carrying disk. 



Note. — The capacity of the glass barrel is 44 quarts. The disk is driven by 

 a small hot-air motor of ~^-^ horse-power. The top of the funnel at e is covered 

 with very fine silk, which allows the passage of water but not of larvae. The 

 opening of the funnel is the size of a five-shilling piece, and the ' flare ' decreases 

 intensity of the current, which, if it were too violent, would carry the larvae 

 out of the barrel. 



Fishery Congress ^ in 1908. In February he procured ten adult 

 turbots and confined them in the large hatching basins at 

 St. Vaast. He notes that it is at present impossible to distin- 

 guish between males and females — while they are alive — and 

 that turbot may be immature if they measure less than 15 or 



1 The '■ Cultivation of the Turbot,' Bull. U.S.B.F., vol. xxviii, part 2, p. 861. 



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