J. PISCICULTUPvE AND THE FISHERIES. 447 



of steamers from San Francisco could transport these eggs 

 and deliver them in about thirty days, and with the almost 

 absolute certainty of a successful result. In the case of the 

 Oheron^ from three to six months will elapse before the jour- 

 ney will be accomplished. The salmon of Japan and Kamt- 

 schatka, would also be equally, or even more eligible for the 

 experiment. 19 A^ January IB^ 1 SYS, 64. 



NATUEALIZATIOX OF TKOUT IN NE^V ZEALAND. 



The Acclimatization Society of Xew Zealand announces the 

 capture of a full-grown English trout, the result of spawn 

 sent out from England, and hatched between the 28th of 

 September and the 10th of October, 1868. They have been 

 seen for the last three years, and a male fish was recently 

 captured weighing ten pounds and three ounces. The ques- 

 tion whether the trout are multiplying by themselves has 

 been established by the capture of quite a number only about 

 three inches long. 



It is still uncertain Avhether the salmon which have been 

 repeatedly transmitted to Australia and New Zealand have 

 survived and multiplied. Large fish have been often seen in 

 the rivers, which, it was thought, could be nothing else than 

 these fish ; but the subject has not been verified by an actual 

 capture. We have already referred to the shipment of a 

 fresh quantity of salmon spawn from England in January 

 last, and we hope soon to learn of their safe arrival at their 

 destination. 2 A, 3Iay 24, 1873, 368. 



FOOD FOR DIMINUTIVE TEOUT. 



For a long time a special object with trout-breeders has 

 been to obtain living organisms of sufiicient minuteness to 

 answer the purpose of food for the fry, especially during the 

 period which intervenes between the absorption of the yolk 

 sac and the age of about four months, after which they are 

 more able to care for themselves. The material generally 

 employed in fish-hatching establishments has been chopped 

 meat, liver, muscular fibre, or other substances, w^hich, when 

 supplied in small inclosures, is very apt to produce foulness 

 of the water, resulting in the sickness or death of the fish. 

 Even under the most favorable circumstances the minute 

 fresh-water crustaceans of the geuem Daj^/miaj Cyclops^ etc., 



