re 
U.S. Coast Survev_A.D. Bache, Superintendent. 
Miustrations accompanying the Report of the Electrotype Department 0. §. Coast Survey Office 
1851 
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p i 
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a Fig. 1 
E Co] 
ae Pan of the Laboratory 
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a Showing the arrangement of the Hlectrotype Apparatus 
ae in the U. 8. Coast Survey Office . 
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’ ye in 
i Zene Plates are shaded 
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4 door 
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4 
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eT ee ee ee eee Raia ye fet eee 
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- Scale inch ta 4 tet. 
