180 BULLETIN OF THE UNITED STATES FISH COMMISSION. 



there is hope of a more congenial warmth above. This, no doubt, 

 often retards the rim of shad in the early season and causes a rush 

 and a short catch later on. 



Concerning the taking of eggs, it is my opinion that many can be ob- 

 tained from "Kingston Middle Ground," Catskill, and Stockport, if ar- 

 rangements are made before the first of June. 



IO.-AN ACT TO PROTECT THE FISH I IV THE POTOMAC RIVER IN 

 THE DISTRICT OF COLUMBIA, MD TO PROVIDE: A SPAWNING- 

 GROUND FOR SHAD AND HERRING IN THE SAID POTOMAC 

 RIVER. 



Be it enacted by the Senate and Hovse of Representatives of the United 

 States of America in Congress assembled, That from and after date of 

 passage of this act, for a term of five years, it shall not be lawful to fish 

 with fyke-net, pound-net, stake-net, weir, float-net, giil-net, haul-seine, 

 or any other contrivance, stationary or floating, in the waters of the 

 Potomac River within the District of Columbia. 



Sec. 2. That any person who shall offend against any of the provisions 

 of this act shall be deemed guilty of a misdemeanor, and upon sufficient 

 proof thereof in the police court or other court of the District of Colum- 

 bia, shall be punished by a fine of not less than ten dollars nor more 

 than one hundred dollars for each and every such offense and shall for- 

 feit to the District his nets, boats, and all other apparatus and appliances 

 used in violation of law, which shall be sold ; and the proceeds of such 

 sales, aud all fines accruing under this act, shall be paid into the Treas- 

 ury : Provided, That nothing in this act shall be construed to prohibit 

 angling or fishing with the out-line or to prevent the United States 

 Commissioner of Fish and Fisheries, or his agents, from taking from 

 said waters of the Potomac Kiver in the District of Columbia, in any 

 manner desired, fish of any kind for scientific purposes or for the pur- 

 poses of propagation. 



Sec. 3. That from and after three months from the date of the passage 

 of this act it shall be unlawful to allow any tar, oil, ammoniacal liquor, 

 or other waste products of any gas-works or of works engaged in using 

 such products, or any waste product whatever of any mechanical, chem- 

 ical, manufacturing, or refining establishment to flow into or be de- 

 posited in Rock Creek or the Potomac River or any of its tributaries 

 within the District of Columbia or into any pipe or conduit leading to 

 the same j and any one guilty of violating this section shall on convic- 

 tion as provided in section two of this act, be fined not less than ten 

 dollars nor more than one hundred dollars for each and every day dur- 

 ing which said violation shall continue, to be prosecuted for and recov- 

 ered as provided in the preceding section. 



Approved, March 2, 1885. 



