When the sheriff of any county has good reason to believe that the jail of his county is in danger of being broken or entered for the purpose of killing or injuring a prisoner placed by the law in his custody, it shall be his duty at once to call on the commissioners of the county, or some one of them, for a sufficient guard for the jail, and in such case, if the commissioner or commissioners fail to authorize the employment of necessary guards to protect the jail, and  by reason of such failure the jail is entered and a prisoner killed, the county in whose jail the prisoner is confined shall be responsible in damages, to be recovered by the personal representatives of the prisoner thus killed, by action begun and prosecuted before the superior court of any county in this State. (1893, c. 461, s. 7; Rev., s. 2825; C.S., s. 3945.)