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coarse fish can be most advantageously cultivated with a 

 view to obtaining food for Salmonidae. Dr. Zenk, who had 

 hoped to have been present with us to-day, is the proprietor 

 of one of the largest fish-breeding establishments on the 

 continent, viz., that of Zeewiese, near Gemiinden in Bavaria. 

 The fishery comprises about thirty miles of water, including 

 a portion of the river Saale well stocked with coarse fish, 

 almost the whole of the Schondra, with many smaller brooks 

 stocked with trout and grayling. I may mention that Dr. 

 Zenk entertains no doubt whatever as to the possibility of 

 breeding almost infinite numbers of any kind of coarse fish, 

 and some of his ponds are devoted entirely to the cultiva- 

 tion of coarse fish for the purpose of obtaining food for his 

 vast stock of Salmonidae. 



I will now pass on to the practical part of my subject, 

 and endeavour to describe to you the various ways in which 

 coarse fish, or, as they are called in Germany, summer 

 spawning fish, may be propagated. 



It must be borne in mind that it has not been found pos- 

 sible to cultivate these fish in the way that the Salmonidae 

 are cultivated. It is not only difficult to manipulate the 

 eggs in troughs and trays, but the difficulty of rearing the 

 young fry is even much greater. They are hatched out as 

 perfect fish, at once requiring extraneous food, and they are 

 so extremely small that all attempts to feed them artificially 

 have failed. They appear to require that as soon as they 

 leave the egg they should be able to seek their own susten- 

 ance on the almost invisible animalculae present in their 

 native waters. But to cultivate these fish artificially is not 

 only difficult, but unnecessary. All that is necessary is to 

 aid nature to a certain extent by placing parent fish in 

 suitable places for spawning, and then protecting the eggs 

 until the fry hatch out. 



