FIG. 31. A North Carolina dredging schooner, showing 

 dredge and hand-windlass. From Dr. Caswell Grave in 

 U. S. F. C. Report. 



FIG. 32. Drawing a more modern dredge by steam power on 

 the New York oyster grounds. From a Report of the N. Y. 

 Forest, Fish and Game Commission. 



