Lake Maxinkuckee, Physical and Biological Survey 279 



be seen from the following tabular statement. It is doubtful if any 

 lake in the country has been more liberally supplied with fish by 

 the Government. It is also doubted if there is any other lake where 

 the results of artificial plantings of fishes have been more satis- 

 factory. Perhaps the best results have been obtained with the 

 walleyed pike, locally called "salmon." While this species is un- 

 doubtedly indigenous to the lake, it does not seem to breed well 

 in this lake. In order to keep up the supply to any considerable 

 abundance it is therefore necessary to make large plants of fry 

 from time to time. It is believed that the majority of "walleyed" 

 pike caught each year are the grown up fish from the fry planted 

 two or more years previously. It is difi'erent, however, with the 

 large-mouth black bass, the small-mouth black bass and most of 

 the other species planted ; they all breed freely in this lake and 

 every plant made increases the breeding stock correspondingly. 



It will be observed from the table that four plants of lake trout 

 aggregating 10,587 fish have been made in this lake. So far as 

 we have been able to learn there is no evidence that any of these 

 survived ; there is no authentic record of the capture of a lake trout 

 in this lake. If the physical and biological conditions obtaining in 

 Lake Maxinkuckee had been as well understood before the lake trout 

 were planted, as they are now, those plants would not have been 

 made. One of the important results of our investigations was the 

 discovery that there is little or no absorbed oxygen in the deeper 

 waters of the lake in the fall. Deep-water species, such as the lake 

 trout, whitefish, etc., finding no oxygen in the depths they inhabit, 

 can not survive. This interesting problem is discussed more fully in 

 another part of this report (page 221). If this important fact had 

 been known in time the plantings of lake trout would not have been 

 made and the Government would have been saved an expense 

 greater than the entire cost of all the investigations that have been 

 made of Lake Maxinkuckee. 



The following table shows the number of fish of the various 

 species that have been placed in Lake Maxinkuckee. In the earlier 

 plantings the two species of bass were not difi"erentiated ; each 

 planting usually contained both species, the large-mouth more often 

 predominating : 



