82 Thirl tj-sirlh Annual Meeliny 



years ago, the cateli had remained about the same since 1Si)2, 

 exhibiting a sliglU decrease. Recently, however, tlic output has 

 been increasing, and this is attributed to artificial propagation. 

 There are now 28 sahnon hatcheries, which liberate 35 to 40 

 million fry annually. Tn the opinion of Dr. T. Kitahara, of the 

 Imperial Fisheries Bureau, who in the fall of 1906 made a 

 special inspection of the salmon hatcheries and fisheries, arti 

 ficial propagation is a least ten times as effective as natural pro- 

 pagation in the case of the dog salmon in Ja])an. 



T lie F c e dill g of Sal m o n o i d s . 



(Extracted from a series of editorial papers published i«i the 

 Allgemeine Fisherei-Zeitung in 1906-7, under the title, "Fir<t 

 Introduction to Feeding of Salmonoids." 



Live Food for Fry. 



The feeding of the fry is the most difficult task that the fish- 

 culturist has to master. In this work we are confronted by t! e 

 same dangers with which we have to contend in the nourishment 

 of our own sucklings, which, as is well known, when other foods 

 are substituted for mother's milk, die in multitudes, of intestinal 

 catarrh or other diseases. If we are going to make use of cur ex- 

 perience in the feeding of infants, then we must demand : 



First, that the food shall be administered always and only in 

 irreproachably fresh condition; second, that the food shall be 

 given only in an easily-digestible form; third, that the chpmical 

 composition of the food shall meet all the numerous demands 

 for the building up of its blood and various tissues. 



Beyond question, live food meets all the above demands. In 

 nature the young salmonoid fry feed on microscopic animals, 

 such as insect larvae, that is, larvae of ephemerids, of caddisflios, 

 of mayflies, the larvae of certain gnats, for example the kriebcl- 

 gnat, also on small Crustacea, especially young amphipods 

 ("Flohkrebschen." doubtless meant to include Gammarus and 

 other amphipods) and other minute creatures, which are found 

 on the ])hints in trout-brooks, between stones on the bottom and 

 on the shore. 



Were we in position to furnish the young fry a suRcient 



