REPORT OF ENGINEER OF THE BUREAU OF 

 MARINE FISHERIES. 



New York, November 27, 1911. 



To Mr. Robert A. Widenmann, Superintendent of Marine 

 Fisheries: 



Sir. — I have the honor to present the following report of my 

 work surveying and mapping lands under water of the State of 

 New York for shellfish culture, and preparing the necessary 

 papers connected therewith, for the fiscal year ending October 

 1, 1911. 



My principal work during the past year has been the plotting 

 of field data of the triangulation system in Long Island sound 

 based on and in continuation of the polyconil projections of the 

 United States Coast Survey, and the survey of oyster lots and 

 tracts of lots in Long Island sound, Raritan bay and resurveys 

 of lots in Long Island sound, Raritan bay, Jamaica bay and East 

 Chester bay. 



During the fiscal year of 1910, I made the triangulation sur- 

 vey between Horton's Point and Orient Point, and Plum Island, 

 about thirteen miles in length, and established and located thirty- 

 six signals, three of which are tripods, and the remaining thirty- 

 three natural objects, thus saving the expense of erecting tripods. 



In the past fiscal year I have plotted on polyconic projections 

 the thirteen miles of notes of the 1910 field work above described, 

 between Horton's Point and Plum Gut, and many others between 

 Horton's Point and Port Jefferson. 



This survey is in continuation of the coast survey between Port 

 Jefferson and Horton's Point. The thirty-six signals plotted on 

 polyconic projections are Bushy Tree, Horton's Point Light, 

 Box, House, Thomas' Barn, Sutton's Chimney, Woodworth's 

 Chimney, White Cupola, Greenport Stand-pipe, Pilot Tree, 

 Rock 17-B, Rock 18, Jerome Hill, Summer House, Rocky Point 

 Life-Saving Station, Rock 19, Rock 19-A, Birds-eye, Brown's 

 Hill, Long Beach Range, Moses' Rock Colonial House Farm 



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