FISH FOR THE FORESTS 



701 



there. One should also know the dates 

 of previous plantings with kinds of fish 

 used, and degree of success or non- 

 success ; also the extent to which the 

 stream is polluted by sawdust or other 

 deleterious substances ; the principal 

 kinds of food of the fish ; number of 

 irrigation ditches and extent to which 

 they are screened. With such data 

 before it the Bureau of Fisheries can 

 determine approximately the num- 

 ber and kind of fish which should be 

 allotted. In some cases the kind of fish 

 requested is not adapted to the waters 

 to be stocked, sometimes because the 

 food supply is unsuitable and frequent- 

 ly because the introduction of the fish 

 applied for would be detrimental to the 

 kinds which the waters already con- 

 tain. The Bureau of Fisheries will 



not, for example, furnish spiny finned 

 fishes such as the bass or perch for in- 

 troduction into waters containing trout 

 or salmon, nor will trout or landlocked 

 salmon be allotted for waters contain- 

 ing voracious fishes such as bass or 

 pickerel. Only one application will be 

 considered for any particular body of 

 water and only one species of fish will 

 be assigned an applicant during any 

 one season. These are simply illustra- 

 tive of the factors which guide the Bu- 

 reau of Fisheries in its allotments of 

 fry. 



The majority of the waters within 

 the forests are turbulent mountain 

 streams or icy alpine lakes, consequent- 

 ly trout are in stronger demand than 

 any other species. The blackspotted 

 trout which is native to the Rocky 



A Fishing Camp. 



THIS IS ON THE ANGELEsInATIONAL FOREST IN CALIFORNIA. THE LON(; STRING OF FISH IS AN INDICATION OF THE 



QUALITY OF THE SPORT. 



