42 



REPORT OF BOARD OF FISH AXD GAME COMMISSIONERS. 



ditch or canal in which fry were placed. After a careful study of 

 hundreds of ditches and canals and the matter that is carried into them, 

 in the form of alg'se, leaves and grasses, and floating material generally. 

 I am firmly convinced that the parallel bar screens can he placed in all 

 the ditches and canals without working a hardship or inconvenience on 



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any person or company. When we first began this work we recom- 

 mended the parallel bar screen and any of the rotary screens that the 

 ditch o\^^lers desired to put in, so long as the meshes met the regulations 

 of one quarter of an inch. Since then several engineers have planned 



