20 Survey of Oyster Bars, Somerset County, Md. 



To Mr. Walter J. Mitchell, chairman of the Maryland Shell Fish Commission, who, 

 by his administrative ability in carrying out the complicated requirements of the oyster 

 laws and by his unfailing tact, has made the cooperation of the various services engaged 

 on the work both agreeable and effective. 



To Dr. Caswell Grave, secretary of the Commission, who, as editor of the Com- 

 mission's annual report and commissioner in charge of the biological and economic 

 oyster investigations, has been brought into constant contact with the Government 

 work and aided its operations in every way. 



To Benjamin K. Green, treasurer of the Commission, who has looked after the 

 equipment and commissary of the house boat in such a way as to add greatly to the 

 comfort and convenience of the party of the Coast and Geodetic Survey. 



To Swepson Earle, hydrographic engineer to the Commission, whose knowledge of 

 the work from former service in the Coast and Geodetic Survey has greatly facilitated 

 his practical use of the technical data furnished by the Government. 



To Thomas H. Robinson, counsel to the Commission, for courteously furnishing 

 valuable information relating to county boundaries. 



And to the many others connected with the Commission or who as residents in the 

 locality where the work was being carried on have greatly assisted by furnishing 

 important information or willing services. 



CHARTS AND MAPS. 



CHARTS OF NATURAL OYSTER BARS. 



The charts 0, of the natural oyster bars of "Somerset County and Adjacent Waters," 

 published by the Coast and Geodetic Survey from results of surveys of the Government 

 in cooperation with the Maryland Shell Fish Commission, consist of a series of five 

 sheets covering the eastern shore of Chesapeake Bay from Hooper Strait to the Maryland- 

 Virginia boundary, including Tangier and Pocomoke sounds and numerous other 

 tributaries. They are published on a scale of i part in 20,000 (approximately 3% inches 

 to a statute mile) and are constructed on polyconic projections and based on the United 

 States standard datum of the Coast and Geodetic Survey. 



These charts show all oyster bars, crab bottoms, clam beds, and other boundaries 

 established by the Commission, and are certified for the purpose of filing in the office of. 

 the clerk of the circuit court of Somerset County and in the office of the Commission at 

 Annapolis, as required by the oyster laws of Maryland. 



In addition to the oyster-bar and other boundaries, the charts show the location 

 and name of all landmarks (U. S. Coast and Geodetic Survey triangulation stations) 

 used in making the survey, together with the hydrography and topography ° necessary 

 to make the technical definitions and delineations of boundaries readily understandable 



" These charts can be obtained by application to the Superintendent of the Coast and Geodetic 

 Survey, at Washington, D. C. 



b Much of the details of the inshore topography was obtained from the excellent map of Somerset 

 County prepared and published by the Maryland Geological Survey under the direction of Dr. William 

 Bullock Clark from surveys of the Maryland Geological Survey in cooperation with the U. S. Geological 

 Survey. 



