young wns very scc.rcc, although vre hcvd nlnost 300 spavm lobsters 

 v.'-hich should produce Inrvcieo 



Exper iT.ient 2» 



July 19: Put in 1,000 young 

 20: " " 1^400 " 



21: " " 2,500 " 



22: . " " 2,450 " ■, up to this time, a total 7,350 



22: Most are in 2d stage, some fevf already in 3d f.ta.^o. 

 27: " " " 3d " 



27; Ten young lobsters in bottom stage taken up 

 28: 

 29: 



28: Tv/elve " " ■" " " " " 



etc, (see Table pp. 178-179) 



a «• e CI o« o « e 



• c«ec«a«o« 



August 14; Four young lobsters in the bottom stage taken up« 

 The box -is now empty* Total result 256 in the 

 ■ bottom (4th) stage, or 3.61 per cents 



These were eventually , liberated on the beaoh at the outlet of 

 the 0^inekilen, where the bottom is covered v;ith stones and seaweed. 

 The young lobsters immediately seek the bottom.© As you Yj-ill see, 

 there is quite q variation in the duration of the development; in 

 this experiment there ims a difference of 19 liys betvreen the first 

 rnd the last yo^ong lobster in the bottom stagen This variation is 

 a great difficulty which Y/ill cause a lot of v/ork if vre, some time 

 in the future, should succeed in rearing young lobsters by the 

 thousands, - which is oior intention* In order to use the apparatus 

 properly, vre should then have to sort out brood of the different 

 stages all the time, anr' then put a large number of individuals 

 of the same stage together into other boxes, in order to keep the 

 boxes full and to prevent having young of different stages in one 

 and the same boxt. The older ones Vfill injure the younger ones 9 

 However i not even young in the same stage spare each other; a 

 young lobster occupied in eating one of its ooi.ipanions might be 

 seen any tim-o«, 



Bcperiment 3e 



July 23: Put in 2,300 young 

 24: " " 600 " 

 29: Five young lobsters taken up 

 etc. (see pe 179) 



August 7: The box is emptye Taken up., total 55, is-ec 

 lo9 per cent 3 



167 



