Entire height of the box 



Breadth of the bux • < • « . f r t 

 Height of wooden frame on top » • 



" '! " " bottoja . 



" " net 



Brer>c?th of net ...... e .. . 



The ivooden frane ut the botton can bo uiiide 5-10 cm* vdde. 



On one side of the upper v/ooden frnne tr.-ro pieces of cc.nvr.s 

 thi^end (twi;.ie)c.re fastened, by rieans of which the box is tied to 

 n rope, which \Till be irientione-f dqIot:. At the botton r. piece of 

 crinvas tlirec.d is fastened in two dianetrically opposed corners; on 

 this piece of canvcs thread one hangs a st jne of adequate size, so 

 thrt the box will keep the balance in the v^^tere 



3y laeans of the two canvas threads fastened to the upper wooden 

 frame, the box is tied to a rope, which is fastened in both ends, and 

 which lies right near the surface of the v»T.ter» The rope is most 

 conveniently fastened to rocks on both sides of a bay© In choosini^ 

 a place, one hrs to Jiake s^jre that the water is salt enouj^h, i.e., 

 no rivers must rvm out there, etci, r - - Of course several bores 

 night be tied along the same ropce 



With regard to the iiaterial used for the boxes, it is necessary 

 that the Keshes of t?ie net are as v/ide as possible. My experiments 

 have shown that this fact is of greater iiipoi-tance than one should 

 think. If the meshes are rx'rravr, the supply of fresh sea water will 

 be less, and this has a very hari.iful effect on t!ie development of 

 the bro'id, as the mortality increases considerablyo Good circvila^ion 

 of fresh sea 7/ater is one of the -fiin conditions for making the 

 lobster young thrivoi, 



Tio cover s?iould be used on top of the box. At least 10 cn^. of 

 the upper wooden iraip.e should always be above the Vfatere Neither 

 should metal netting be used in the boxes » ■'-''ire -netting rusts 

 easily^ even if galvanized, and thereby the vrtiter in the boxes is 

 polluted; also it is easily'- broken under such c.nditions, and t}iereby 

 the young can escape. According to my experience, brass netting is 

 the worst thing to use. TViis is simply poison for the brood (the 

 coppsr of the brass is poison for most aniLnls); probably one would 

 not be able to rear a single young lobster in floating boxes if 

 brass netting shoiild be usedo 



In short, if we should use the above method of rearing young 

 lobsters in floating b'-^xes, the follov;irig roist be observed: 



T>ic rearing boxes m.ust consist of as little v;ood and as much 

 net as possible; the not should be a thread-net (best is the s ;-callc;d 

 iron-thread-net), and this must have as vride meshes as possible In 

 order to i^et the best possible v/atcr -circulation. The plc:.ceE 5f the 

 boxes must ha"e sufficient salt water on the surface, scarcely below 

 25 o/oo.- 



17 



