Mullen has written to Father McCaffrey and encloses the answer he has received. He will hold himself ready to start after receiving McFarland's letter. He asks instructions of the route to take and the probable expenses. He hopes he will be no trouble after the first half year. A note on the back of the letter: Promised to pay Dr. McCaffrey $100 if letters, etc. are satisfactory. ` A.L.S. 1p. ` Enclosure: