In this beg the motion wr^.s very irregulcrj especially during 

 the first days tlic propellers did not vrork because of- engine trouble. 

 The larvne were rut in on July-20j on August 8, those 'vhich were loft, 

 i.e., 400, ifere taken out; alnost all vrere in the 4th stage. These 

 started already to attach thci'iselves to the sides of the bag' and to 

 give up' their swinning "vre\y (Xf 'life." In this bag, then, alout 8-10^ 

 was reared to the 4th stage. - I beg to rcMnrk that • nt the tine when 

 the notion in this bag became the sane as in the other bags, the loss 

 of brood was already so large, that v/e could tell witli certainty that 

 the result v/ould show a very small 'percentage. It is hovrever inter- 

 esting tliat, in spite of this fact, the result vj-as better than those 

 pttained by ny experiments with floating boxes. • • 



In another bag (F) about 5000 yo\3ng lobsters v/ ere. put in between 

 July'21 and 24. These liad been hatched the sane day and were taken 

 froiii a bo:c where a mother lobster wr s kept for hatching. At the 

 beginning there v;as no motion here either.-. The first 24 hours the 

 motor did not vrork, and also later it vrorked very irregularly; it had 

 to be ^stopped for a whole-night several tiiaes and also- for several 

 hours on different occasions. YJhen vre know about the bad results frcn 

 the' experiments in the floating boxes, it is easy to understand that 

 the sane thing would happen in thpse apparatus as soopi as they v/ere 

 exposed to the".'same conditions, ■ i.e., ivithout any notion. T/hen the 

 experiment was finished on Au,;ust 8, 15U0 young lobsters were taken 

 out; about half .of these T/ore in the 4th stage. The other half were 

 in the 3d stage''.' • • • .and vte night therefore assune that a total 

 of 1000 young lobsters vrould have reached the 4th stage. Accordingly, 

 in this rearing bag the nunber of yotuag lobsters which reached the 

 4th stage vrould be about 20?^. 



In the third bag (G) about 10,000 young lobsters in the first 

 st-Cige were put in. These were newly-hatched and were put in between 

 July 24 and 29. ^'.Iso in this bag the motion i«ra.s irregular at the 

 begimaing,. so Jchat the first 800 yoimg lobsters spent some time with- 

 out notion in the water.. Later ^n the notion, became more regular, 

 although not quite satisfactory. On, August 8 there were at least 

 4,000 young lobsters left in this., bag; hovirever, of these only about 

 500 were in the 4th stage, the rest partly in 3d, partly in 2d stage. 

 To evaluate the 'final result, which only can be an estimati'on, I 

 have to remark that as long as the' propellers vrorked steadily, there 

 was little loss in the bag; but if,, t'he propellers stopped for sone 

 tine,-- es.pecially during the night,, the loss' v/as considerable. I 

 therefore suppose, that of- the 4000 youtig lobsters, about 3000 or 

 about 30/O v/ould have reached the 4th stage by one week after the 

 experinent vras stopped, if the development had proceeded Just as 

 quickly as in the other bags. -, 



In the 4th rearing-bag (H) I wished to try th^ ; method also for 

 hatching the lobster, eggs which had been loosened from some nothcr 

 lobst'ers. As vre could have expected, this ■wos e.asily done., I did 



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