MERCURY. 
"LMOIRS /iV ' 
A( 
M>, VOL. XII 
PLATE XXX 
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THad of Drawings Oct. ^7=28 
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TrtnJ of Drawings Oct. 28«2Q 
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Triad of Drawings Jan. 5 <*. 
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Oct. 29— -ih i^in. 
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Jan.6— 31150111 4I1 
y 
I 
IS 
THREE 
TRIADS OF DRAWINGS, 
S„UUI>.. S.OXV ROTATION. 
DRAWINGS BY MISSLKO.NAI'K. 
