egg bearing fer.iales did not aerate their eggs in the proper nc.mierc. 

 This has been confirraed by the presence in the collectors of a great 

 niimber ^f dead eggs* 



Finally, rre have observed that the young larvae rrere loss vigor- 

 ous than those of the preceding yearo This fact had been observed in 

 1945, and one attributed it to "the exceptional duration of hatching" 

 (up to August 15), In 1947 the hatching period is also prolonged to 

 August 15 « Must Tire see in that a relation with the strong fluctuat- 

 ions of temperature that \io have recorded in the coiirse of the 

 season; that is strongly plausible. Finally, there is reason to 

 charge the possible toxicity v/itli the paint freshly put on the 

 interior of the hatching boxes* 



Geraud and De Ke'rillis « ' ,.■■-' 



.. 1895 Le laboratoire pxiritine de Dildo» Bull, des Peohoe 



Maritlmes, Reve Iv'Ir.ritiine et Coloniale, 'tome 76, 

 Juillet, Paris, pp. 157-11^4, illus* 



The Dildo Marine Laboratory 



Cp'.' 170) , 



TiTe have also been able to see, and in all their details, the 

 truly floating incubators/ irtxrenfced by Ileilsen himself, which per- 

 nitted the coastal industri-es to replace whenever they wish, by 

 increasing the n-unto^.of inciibators in proportion to the lobsters 

 destroyed on the spot in such great nurabers by the intensive fish- 

 eries each year and by the vrast^ V^hich results from preparing the 

 canned (lobsters) for export* 



This incubator is composed of a -White wood tank, oblong, of 

 1 m, 25 long by m 30 wide and aboiat m '20, deep« The. bottom is 

 curvedo The tank is equipped externally on. a large part of each 

 lateral face with tv/o a ilerons , not absolutely horizontal,: but 

 slightly curved siiirally; they are also vftiit.e ViToode vA line, fixed 

 to the bottom of t he .outside, and attacj^ed at the other end to a 

 heavy rock^ periaits the apparatus to be'; maintained easily in a 

 specific coastal regiono A vulcanized rubber tube makes comiiaunicat- 

 ion frpra the sea water to -that of the tank« .In the angles the up- 

 rights are opened from top to bottom by. ^ riarrow pipe v/hich assures 

 the air o-irculationa 



A metallic screen, (galvanized iron) of fine mesh, is stretched 

 horizontally for a fevf centimeters above '-the bottom. It supports the 

 eggs, vjhich, deposited there after fertilization, are going to hatch 

 into the desired lobsters. On one of the small sides of the tank 

 at the left extreinity, a rectangular port is also formed by a fine 

 metal screen of the same nature as the other* 



122 



