320 BULLETIN OF THE UNITED STATES FISH COMMISSION. 



over 60,000 eggs each, the eggs from the two fish filliug a common-sized 

 milk-pan. The fish were emptied into the river at the turn of the flood 

 tide, so that as the tide goes out the young shad are carried down the 

 river far enough so that the impurities emptied into the river from the 

 paper-mill may not kill them. Mr. Fenton seems to think that the acids 

 discharged in tlie river are not so destructive to fish as is generally sup- 

 posed, and says, in support of his views, that several days since, just 

 after the hatching of several thousand shad, the vats of the paper-mill 

 were discharged into the river while the tide was rising, and conseqneiitly 

 the impurities were forced np the river to the hatching-boxes, a few 

 hundred yards above the mill, filling them with impure water, so that the 

 young fish could not be seen ; but after the tide went out and the water 

 became pure no perceptible harm had been done the fish. 



Besides the young shad jtlaced in the river here, the United States 

 Fish Commissioner placed 1,000,000 fish in the river at Milford, although 

 he is doubtful if many of these live to reach the Sound, as not only 

 do they have to run the risk of being devoured by the bass and pickerel 

 in the lake, but the passage of the dam during the month of Septem- 

 ber, when the water is low, is doubtful, and if they take to the canal 

 and pass through the water-wheels of the different shops, they go to sure 

 death, as has been seen at Windsor Locks. [Forest and Stream, July 

 17, 1884.] 



PENNma EOCKFisH AT Batteky STATION. — Lieut. W. F. Low, TJ. 

 S. N., who was in charge of the station in April, 1883, wrote : "I am in- 

 formed that last Jnne some four hundred rockfish were placed in the 

 pool at this station. The last authentic account I have of them before 

 the ice formed is from Mr. Mitchell, the lighthouse keeper, who tells me 

 that he saw a great many of them on several occasions near the surface 

 of the water and always swimming in the same manner, namely, round 

 and round. 



Since I have taken charge of the station (five weeks) four dead ones 

 have been found, all very thin. Yesterday we made a haul in the pool 

 and captured two live ones and a dead one. The dead one was cov- 

 ered with mud and had evidently been dead some time. Of the live 

 fish one was a male and the other a female. The female measured 28 

 inches and the male '20. Both were in i^oor condition and no evi- 

 dence of food was found in them. The head of the female was much 

 bruised, as if from constant rubbing against some hard substance. The 

 haul was not a very thorough one, as the seine hung several times, and 

 we were obliged to lift the leads some distance from the bottom on 

 each occasion." 



Battery Station, 



Havre de Grace, Md., April 5, 1883. 



