[129] FISHERIES OF THE UNITED STATES. 773 



Countersunk rowlock. 



Made of galvanized iron. Used on Ohio Eiver flat-boats. Middle- 

 town, Conn. 25,111- Wilcox, Crittenden & Co. 



La Chapelle rowlock. 



Called also Lake Michigan rowlock. Made of galvanized iron. 

 Used in vicinity of Detroit Eiver. Middletown, Conn. 25,112. 

 Wilcox, Crittenden & Co. 



Sail-boat rowlock. 



Made of galvanized iron, with socket. Middletown, Conn. 57,550. 

 Wilcox, Crittenden & Co. 



SlDE-PLATE ROWLOCKS. 



Made of brass, polished. Used on gunning skiffs. Series of three 

 sizes, 5J to 6 inches high. Middletown, Conn. 25,076-8. 

 Wilcox, Crittenden & Co. 



SlDE-PLATE ROWLOCKS. 



Made of brass, unpolished. Series of three sizes, 5J to 6 inches high. 

 Middletown, Conn. 25,079-81. Wilcox, Crittenden & Co. 



SlDE-PLATE ROWLOCKS. 



Made of galvanized iron. Series of three sizes, 5 to 6 inches long. 

 Used on gunning skiffs with light gunwales. Delaware Eiver 

 model. Middletown, Conn. 25,106-8. Wilcox, Crittenden 

 &Co. 



Socket-joint rowlocks. 



Made of brass, polished. Frederick A. Gower, the maker, claims 

 several advantages over ordinary rowlocks. " Wabbling of the 

 oar is prevented, a good grip of the water is secured, it has 

 superior strength, and is very compact." Height, 5£ inches. 

 Middletown, Conn. 29,319. Wilcox Crittenden & Co. „ 



Eound socket rowlock. (Newport and Providence Eiver pattern.) 

 Made of galvanized iron. Height, 5f inches ; opening for oar, 2£ 

 inches diameter. Middletown, Conn. 29,459. Wilcox, Crit- 

 tenden & Co. 



Patent rowlocks. 



Made of brass, polished. Series of five varieties of ball-aud-socket 

 rowlocks invented by Israel Mayo, of Gloucester, Mass. Mid- 

 dletown, Conn. 57,544. Wilcox, Crittenden & Co. 



Dory rowlock. 



Made of gun-metal, with socket. Southwick's patent fastening at 

 foot of shank to prevent slipping. Middletown, Conn. 25,090. 

 Wilcox, Crittenden & Co. 



