which the hinding is made, is determined by the direction of 

 the current, wind, etc. The fourth side is used as a wharf. 



With a view of ascertaining tlie condition of our waters, 

 their adaptability for the introduction of foreign species, and 

 their capacity of furnishing food, etc., for them, we have 

 examined carefully the rivers of the State, commencing in 

 the extreme North West, among the tributaries of the You- 

 ghiogeny, and have completed our examination, as far tSouth 

 and East as the Chester. We have made collections of the 

 fishes found in tliem as even the smallest minnows, and all 

 animal life found in the waters, are of importance as furnish- 

 ing food for the larger food fishes. We have deposited tliese 

 collections in tlie museum of the Maryland Academy of >Sei- 

 ences — the Society having furnished us witli the alcohol. In 

 the apjjendix will be found a descriptive list of tlie species 

 which are known to inhabit the waters of the Chesapeake 

 Bay and its tributaries, carefully prepared by, and under tlie 

 superintendence of Prof. P. R. Uhler — the able President of 

 the Academy, We hope that in our future collections, we 

 will be able to bring together a complete representation of 

 tlie fishes of our waters, and believe that many species will 

 be added to our list. 



Fish- WAYS. 



In order that we might better make the examination re- 

 quired in section 2nd of chapter 150, La\\s 1.874, we selected 

 a time when tlie Potomac River was very low, t<) make a sur- 

 vey of the Great Falls. 



President Arthur P. Gorman, who has ever manifested the 

 greatest interest in the work of the Commission, landly ])laced 

 his packet at our disposal, and furnished us with the neces- 

 sary transportation up the canal. We invited the Commis- 

 sioners of Fisheries of Virginia to make the survey with us, 

 as botli States are equally interested in liaving an efficient 

 fish-way constructed over this barrier, to the ascent of fishes 

 i'rom the tide water to the upper portions of the States, drained 

 by the Potomac and its tributaries. Colonel A. Mosely rep- 

 resenting his Commission accordingly met us at Georgetown, 



