size that they can be used for food» 



Neither do I agree vrith hin rrhen he, on p« 142, trarns against 

 hatching of lobster on a large scale. Even i f his ovm vnrong cal- 

 culations are used as a basis, it v:ould be excellent business for 

 the state. 



At a cost of lo", 9,000 vre can get 180,000 lobsters, v/hich can 

 be used for food after the seven years which the lobster needs for 

 its developnent. If the price of these lobsters is 1.00 kro a 

 piece, the annual profit v/ould be about 300 per cent. If v;e correct 

 lir. Appell/f's calculations, the profit will be tvj-ice as big; every 

 year vre should have an incone six tines greater than the costo 



On pp. 140-141 Mr. Appell/f gives Q calculation as to hov; much 

 Fl/devigen - compared to the apparatus recomaended by hin - can 

 produce and what it ivould cost* 



Here he iiiakes nev/ mistakes, v/hich ought to be pointed outs, He 

 says for instance that my apparatus are 5 x 5 inches square and 4 

 inches high. Thereby he gives the impression that their cubic 

 capacity is 5 x 5 x 4 s 100 cu, inches. This is quite vnrong. The 

 bottom is, as mentioned, 5x5 inches, but as the walls slant consid- 

 erably, the upper edge of the a^jparatus is 12 x 12 inches, and the 

 breadth, in the middle is 8-| x 8|- x 9 » 650 cu. inches; this makes 

 quite a difference. 



Concerning the expenses in Fl/devigen the professor finds that 

 no calculations are necessary "as \7e Icnov/that the building-expenses 

 as TJ-ell as the v.^r king-expenses are many times higher at such a 

 stationary hatchery, than they are at 'a temporary one of Ifead's 

 tj^e," This is not so certain. Let us first look at the building- 

 expenses; 



• , • , , , • •• • 



• • , ,%., • • • • 



(p. 330) 



As it seems thot also \re are going to start hatching of lobster, 

 a short survey of the history of this case mj-;;ht be of interest© 



Prom the middle of the last century vre have vrorked with hatching 

 and rearing of lobster in this country, up to 1880 mainly in 

 Stavanger, 



One used' the method of putting lobsters With outside spawn into 

 boxes which were placed in the sea. The brood was partly hatched, 

 but disappeared'. 



.109 



