breach of prison

from Bouvier's Law Dictionary, Revised 6th Ed (1856)
BREACH OF PRISON. An unlawful escape out of prison. This is of itself a 
misdemeanor. 1 Russ. Cr. 378; 4 Bl. Com. 129 2 Hawk. P. C. c. 18, s. 1 7 
Conn. 752. The remedy for this offence is by indictment. See Escape. 
    

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