16 REPORT OF COMMISSIONERS OF INLAND FISHERIES. 



than in the case of the fresh-water fish in adjoining aquaria The 

 secret of success hes in continually filtering water through a thick 

 sand filter and in keeping it cold by the use of ice in specially devised 

 compartments of the aquaria. 



The experimental station and hatchery at Wickford is a continual 

 exhibit, and the entertainment of the many hundreds of visitors is no 

 small item in the demands upon the time of the staff. However, 

 this time is well expended, for it extends correct information regarding 

 the fisheries problems in the most effective manner. 



CO-OPERATION WITH THE FISHERIES AUTHORITIES OF OTHER STATES. 



Co-operation with the Fish Commissioners of other States is one of 

 the duties imposed upon this Commission by the legislative Act which 

 created it. The specification of this pohcy as a duty of the Com- 

 mission is a tribute to the good sense of those who drew up this Act 

 in 1871. For years your Commissioners have co-operated actively, 

 not only with the Fish Commissioners of other States, but also with 

 those of the United States and with those of many foreign countries, 

 and have gained thereby valuable experience and assistance, as well 

 as much-cherished recognition of their scientific results. 



During the past year, at the request of the United States Bureau of 

 Fisheries, an exhibit illustrating the growth of the clam and the 

 scallop was installed with the government exhibit at the Alaska- 

 Yukon International Exhibition at Seattle. 



At the last meeting of the American Fisheries Society one of your 

 Commissioners was again elected to an important office. 



Your Commissioners have been in correspondence with the Com- 

 missioners of Maine, Massachusetts, and Connecticut regarding the 

 betterment of the fisheries whose interests are common to all. Your . 

 Commissioners take this occasion to express their obligation especially 

 to the Commissioners of Connecticut for valuable assistance in the 

 lobster experiments. 



