TECHNICAL INDEX TO PUBLICATIONS. 



EXPLANATION. 



The technical index to the publications of the Maryland Oyster Survey is divided 

 into four sections of two parts each under the heads of "Natural oyster bars," "Crab 

 bottoms," "Clam beds" and "Landmarks (U. S. Coast and Geodetic Survey tri- 

 angulation stations)." 



The first part of each section is an "Alphabetical index," which gives for each 

 natural oyster bar, crab bottom, clam bed, or triangulation station, as the case 

 may be — 



1. The serial number of the Maryland oyster chart on which it is shown. 



2. The approximate geographic location in latitude and longitude. 



3. The county in which it is located. 



4. The "County index number" by which it is indicated on the "Index chart." 1 



5. The page number of the United States Coast and Geodetic Survey county 

 publication of "Survey of oyster bars" on which it is technically described as to 

 boundaries and locations. 



6. The page number of the Fourth Report of the Shell Fish Commission, on 

 which are described its characteristics pertaining particularly to oysters. 



The second part of each section is a "Numerical index" arranged in a separate 

 division for each county within which "Natural oyster bars," "Crab bottoms," 

 "Clam beds," or "Triangulation stations" are located, and gives only the names of 

 the bars, bottoms, beds, or stations, as the case may be, corresponding to the 

 "County index number" of these same objects as shown on the "Index chart." 



The "County index numbers" are arranged in numerical order on the "Index 

 chart," commencing with No. 1 for each county, and in using an index number 

 obtained from the "Index chart" it should be coupled with the name of the county 

 in which it is located. The names of the different counties are given in large red 

 letters on the "Index chart" and their boundaries are shown by red dash and dot 

 lines. 



i See chart in folder of this publication. 



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