iron socket, which serves as support for the propeller shaft. 

 The propeller hns tvio blades, each about 3g- feet long; it is 

 placed six inches from the bottom of the box and inakes about 

 nine revolutions per minuteo Both things will be s omevdiat 

 changed in 1914, partly to give the engine more resistance, 

 partly to increase the circulation. 



The length of the machine barge is 40 feetj the breadth 12 

 and the depth below deck three feet. The place below the deck is 

 divided into four rooms by means of three water-tight bulMieads, 

 so that a possible leakage v/ould not be able to cause any con- 

 siderable tiltingo There are two motors., an older Alfa and a nevr 

 Dan^s respectively 1-|- and 2 indicated horsepowers (in reality, 2 

 and 3 horsepowers). ■ 



One motor serves as an auxiliary to the other; this is a 

 good precaution; thereby we can v/ork vrithout stopping day and 

 night the whole summer through, with exception of a far hoiArs' 

 interruption. 



'■ (p. 528) 



The Hatching 



(410 spaiim-lobsters, vreighing 201 kilograms had been bought.) 



It v/as very surprising that the hatching proceeded so slov/ly. 

 The first young lobsters were observed on June 24, but v/e did not 

 reach a number of 2,000 until 14 days later. At the same time we 

 observed that the brood was infested v/ith a kind of v;orm, which 

 I, do not know, and vvhich has not been mentioned by Dtc Appell/f 

 either s However, it has been described and studied in England, 

 ,cj:id the 'author in question (Cressvrell Shearer) thinks that it has 

 .no harmful effect on the brood. But the possibility is there, as 

 the worm occurred in an unusually large niariberj at least five for 

 each grain of spawn. 



The cause of the poor results might be another kind of damxige 

 brought upon the eggs. A good deal of the eggs appeared to be 

 scarlet red and dead, vdiich according to fisheriaen's statements 

 occurs very seodomo Foreman Evertsen had observed this phenomena 

 before in the experiments at Kvittingsj^, however, not on such a 

 large scale. 



The large numbers of the little worm and the red spavin vrcre 

 no peculiarities for Korshavn in 1913« During a visit at Hvittings/ 

 ■in August \'ie examined Bjelland's spavm lobsters. The worm 



161 



