194 B^sSy Pik^y ^^^d Perch 



the bait from touching the bottom, and renders 

 the use of a float for this purpose unnecessary. 

 The bait should be kept from six inches to a foot 

 above the bottom. The best bait is the larva of 

 the caddis-fly, a small worm or caterpillar encased 

 in a bag or covering composed of bits of bark, 

 sticks, etc. ; it is known in the Rocky Mountain 

 region as the " rockworm." Earthworms, small 

 grasshoppers, crickets, and grubs of various kinds 

 are also useful. 



When it became known to fishculturists, about 

 1874, that the grayling existed in Michigan, 

 attempts were made to propagate it artificially, 

 but without success, as the same lines were 

 pursued as with the brook-trout. It remained for 

 the United States Fish Commission to success- 

 fully cope with the problem in Montana, under 

 my supervision. Beginning with 1898, we have 

 hatched millions at Bozeman Station and the 

 auxiliary station near Red Rock Lake, at the 

 head of the Jefferson River. We have also 

 shipped millions of eggs to different parts of the 

 Union, as far east as Maine, New Hampshire, and 

 Vermont, mostly to United States Fish Commis- 

 sion stations, where they were hatched and planted 

 in suitable streams. It is to be hoped that some 



