black book of the admiralty

from Bouvier's Law Dictionary, Revised 6th Ed (1856)
BLACK BOOK OF THE ADMIRALTY. An ancient book compiled in the reign of Edw. 
III. It has always been deemed of the highest authority in matters 
concerning the admiralty. It contains the laws of Oleron, At large; a view 
of the crimes and offences cognizable in the admiralty; ordinances and 
commentaries on matters of prize and maritime torts, injuries and contracts, 
2 Gall. R. 404. 
    

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