A Psychological Fallacy 



which often exists in the minds of ex- 

 perts in many branches of learning that 

 makes them think that merely because 

 they are thoroughly familiar with a 

 certain subject all others must share 

 their knowledge in at least some degree. 

 The fallacy of the line of reasoning 

 that the works of the great English 

 expert must have produced in this 

 country a wide-spread familiarity with 

 the angling methods advocated by him 

 may be discovered easily by one who 

 endeavors to procure in any of our 

 leading cities a copy of Mr. Halford's 

 most important book from the be- 

 ginner's stand-point and I think from 

 the stand-point of the expert as well 

 "Dry-Fly Fishing in Theory and 

 Practice," published in 1889. For many 

 months, some years ago, the author 

 made a search for this work among 

 New York dealers both in new and in 

 [7] 



