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Coram OF 
PROF. ST. GEORGE MIVART ON THE 
PLATE LVI. 
VERTEBRE OF Sula. 
. Atlas vertebra, seen preaxially. 
. Atlas vertebra, seen laterally. 
. Axis vertebra, seen laterally. 
. Third vertebra, seen laterally. 
. Fifth vertebra, seen ventrally. 
. Sixth vertebra, seen laterally. 
. Sixth vertebra, seen dorsally. 
. Sixth vertebra, seen ventrally. 
. Seventh vertebra, seen laterally. 
. Seventh vertebra, seen dorsally. 
. Seventh vertebra, seen ventrally. 
. Seventh vertebra, seen preaxially. 
. Eighth vertebra, seen laterally. 
. Eighth vertebra, seen dorsally. 
. Eighth vertebra, seen ventrally. 
16. 
. Kighth vertebra, seen postaxially. 
. Ninth vertebra, seen laterally. 
. Ninth vertebra, seen dorsally, 
. Ninth vertebra, seen ventrally. 
. Ninth vertebra, seen preaxially. 
. Tenth vertebra, seen laterally. 
. Tenth vertebra, seen dorsally. 
. Tenth vertebra, seen preaxially. 
. Fifteenth vertebra, seen dorsally. 
. Fifteenth vertebra, seen ventrally. 
. Fifteenth vertebra, seen laterally. 
. Fifteenth vertebra, seen preaxially. 
Eighth vertebra, seen preaxially. 
PLATE LVII. 
VERTEBR& OF Phalacrocorax, 
. Atlas vertebra, seen preaxially, 
. Atlas vertebra, seen laterally, }once and a half the natural size. 
. Atlas vertebra, seen ventrally. 
. Axis vertebra, seen laterally, natural size. 
