be hurled back, and killed often, on the rocks 

 beneath. Had there been volume enough of the 

 falling water to have allowed them a fair swim- 

 ming chance, I believe that they could have 

 climbed the dam through the perpendicular 

 column. 



Under the dam, and a little to one side, a "rest," 

 or pen, has been constructed into which the her- 

 ring swim and are caught. The water in this 

 pen is backed up by a gate a foot high. The 

 whole volume of the stream pours over this gate 

 and tears down a two-foot sluiceway with velo- 

 city enough to whirl along a ten-pound rock 

 that I dropped into the box. The herring run 

 this sluice and jump the gate with perfect ease. 

 Twelve thousand of them have leaped the gate 

 in a single hour ; and sixty thousand of them 

 went over it in one day and were scooped from 

 the pen. The fish always keep their heads up- 

 stream, and will crowd into the pen until the 

 shallow water is packed with them. When no 

 more can squeeze in, a wire gate is put into the 

 sluice, the large gates of the dam are closed, and 

 the fish are ladled out with scoop-nets. 



The town sold the right to a manufacturing 

 [351] 



