Triiiisadiuiis Society .\a;vl Archilccls and Marine Rntfinccrs, J'ol. -'7, /9/p. 



Plate Sj 



1 o ilhislrnh' pa[^cr uti " l.anuchiiuj of SIti/w in /\cslrictc\/ H'atcrs/' by Captain H. AI. Glcasun, 

 L'oitstntctioii L'(ir/\s\ l\ S. N., Member, ami l.ieiileiiaiil Commander H. E. Saunders, 

 Coiistnietioii Corps, ['. S. N., Member. 



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