rogatory

from The Collaborative International Dictionary of English v.0.48
Rogatory \Rog"a*to*ry\, a. [See {Rogation}.]
   Seeking information; authorized to examine witnesses or
   ascertain facts; as, a rogatory commission. --Woolsey.
   [1913 Webster]
    
from Bouvier's Law Dictionary, Revised 6th Ed (1856)
ROGATORY, LETTERS. A kind of commission from a judge authorizing and 
requesting a judge of another jurisdiction to examine a witness. Vide 
Letters Rogatory. 
    

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