HISTORY AND METHODS OF WHITEFISH CULTURE. 



219 



Statement of the distribution of whitefish eggs and fry by the U. S. Commission of Fish and Fisheries, from 



1872 to 1893— Continued. 



PRY. 



* Includes Detroit River. 



Prof. Rasch, of the Norwegian University of Christiania, lias made a very successful 

 and, at the same time, suggestive experiment in the method of propagating salt-water 

 species. Finding a deep natural lagoon that extended about a mile iuland from the 

 sea, narrowing at the end to the width of a large trench, a basin was formed, covering 

 some 300 acres, with a mean depth of 40 feet, into which the waters emptied. A 

 fence was constructed across the lagoon, which, while it did not interfere with the ebb 

 and now of the tide, prevented the outward passage of fish. Within theinclosure the 

 hatching apparatus was erected for salmon and sea-trout spawn, having connection 

 with two small fresh-water lakes supplied by springs. The fry in the ponds are for a 

 time fed on fine-chopped mussels and then permitted to go into the salt-water basin. 

 Thus they become "acclimated," so to speak. 



A like experiment might be tried with our fresh-water fish. The matter should 

 come before our State commissioners and the National Government. Suitable places 



