"A neiT shedding occurs before the ninth t.^eelca The measiire 

 then (isj 21 millimeters in length and fron three to foiir milli- 

 meters in width in the greatevSt port of the body. Of grayish 

 green color^ of very lively behavior, eudov;ed v/ith an insatiable 

 appetite, these young crustaceans appear very robust o" 



Grovjth of the body takes place, furthermore, under the foil- 

 orbing conditions: 



A lobster which (20 cm. 3) (25 cm 4) It (5 cm 1) 



iTiensures (25 4) iaeasuros(30 5) has (5 1) 



before the (26 7) after (32 4) grovra (5 7) 



shedding (26 7) (30 5) (3 8) 



Contrary to that v^hich has; been announced by ma.ny authors, by 

 Sars among others j, il; seems unmistakeable that the same animal is 

 incapable to give eggs each year. Fullarton, as Ehrenbaum, shov;s 

 also that the annual period of egg-laying is not spread out the 

 entire year, but that it is rather e^cactly included betiireen inid- 

 July and mid-Septembero 



Fullarton Estimates -that , fortlae same animal, the egg laying, 

 on the European coasts j occurs every other yearo Ehrenbaiua, on 

 the contrary, thinks that this egg laying is effected every fourth 

 years The latter author arrived at this conclusion by finding the 

 percentage of egg females contained in the enclosures of the Heli- 

 goland fish dealers* The proportion of reproductive females which 

 he had thus counted is from 23 to 25,4 per hundred. But, as Allen 

 (E, S. Allen, Journo Mar. Biolo Assoco, IV^ No» 1, 1895) iustly 

 remarks: "If is not improbable that a berried female may enter more 

 irregularly into a lobster trap than another one which should not 

 be encumbered with eggs, particularly if the trap contains already 

 other lobsters among which non-berried females happen to occure In 

 case also any maternal instinct in some degree should not exist 

 among this species, an egg-bearing female is placed in state of 

 physical inferiority for struggling vj-ith the other animals. Is it 

 not therefore impossible that it be less bold to enter in the 

 restrained space with other lobsters." 



In 1879, Ivlr. S» He Ditten, court pharinacist at Christiania, 

 in a report entitled "For the Protection and the Reproduction of 

 the Lobster and Oysters," proposed to collect egg-bearing female 

 lobsters in a large floating enclosui^e and to hold them there until 

 all the larvae coming from their brood might attain liberty 

 nat\xrally» 



It was again in Norway that in 1885, Captain Dannevig v;as to 

 hatch for the first time the young larval lobsters, by artificial 

 ■■means in an aquatic establishment. It 7;as by using his incubators 

 that he attained this result. 



155 



