Sentence:  In England and in Scotland, after centuries of experience, the <WSD>netter</WSD> has been so restricted in the use of the destructive engines which were formerly in use there that at the present time many of the more important rivers continue to uphold almost their original standard of fish,—thus actually benefiting the tidal fisherman, the rivers' proprietors, and all concerned. 
Meaning of the word marked with <WSD> tags:  One who nets (in any sense), or who uses a net.