B elding. — Stocking State Waters 149 



system of stocking will be devised whereby the results 

 may be followed in different brooks, where the right 

 species and number of fish will be placed in suitable wa- 

 ters, and where every dollar of the state's money will 

 yield its maximum value. When such results are accom- 

 plished state commissions may feel justified in increasing 

 the output of their hatcheries to meet a larger demand. 



(4) Pollution. 



The fourth step will be the examination of the rivers. 

 Since these streams are greatly polluted by sewage and 

 trade wastes, this investigation will be confined chiefly to 

 the pollution problem, and an effort will be made to stock 

 with hardy species of fish those streams which have not 

 become veritable sewers. Exactly how this problem will 

 be solved has not yet been determind, but it will be along 

 the line of least resistance, by first eliminating the un- 

 necessary pollution, which can be avoided at a slight ex- 

 pense. By cleaning up the single cases of pollution, and 

 preventing new sources, part of our streams may be 

 saved. Later areas of greater pollution may be consid- 

 ered, but the problem is difficult, and may never be satis- 

 factorily solved. 



Summary 



This paper has endeavored to show: 



(1) The need of a new viewpoint in stocking state 

 waters. 



(2) How the defects of former methods may be 

 remedied by a proper selection of the inland waters, a 

 problem long considered of minor importance. 



(3) The necessity of a preliminary survey of state 

 waters as a basis for future stocking. 



(4) That such a survey may be made in a relatively 

 short time, and at a slight expense. 



(5) That the future development of state waters de- 

 mands a definite program of systematic stocking. 



