Which seems also to be Uncle Sam's view of the matter. Far and away more important than any of the plain-clothes equipment thus far mentioned is the "expense account." It is unlike the others in that it is not visible and tangible but a mere condition, a pleasant sensation like the consciousness of a good appetite or a youthful fullness of life. The only reality is a form signed by the czar of the Zone himself tucked away among I. C. C. financial archives. That authorizes the man assigned to special duty in plain clothes to be reimbursed money expended in the pursuance of duty up to the sum of $60 per month; though it is said that the interpretation of this privilege to the full limit is not unlikely to cause flames of light, thunderous rumblings, and other natural phenomena in the vicinity of Empire and Culebra. But please note further; these expenditures may be only "for cab or boat hire, meals away from home, and LIQUOR and CIGARS!" Plainly the "gum-shoe" should be a bachelor. Fortunately, however, the proprietor of the expense account is not required personally to consume it each month. It is designed rather to win the esteem of bar-tenders, loosen the tongues of suspects, libate the thirsty stool-pigeon, and prime other accepted sources of information. But beware! Exceeding care in filling out the account of such expenditures at the month's end. Carelessness leads a hunted life on the Canal Zone. Take, for instance, the slight error of my friend--who, having made such expenditure in Colon, by a slip of the pen, or to be nice, of the typewriter, sent in among three score and ten items the following: Feb. 4/ 2 bots beer; Cristobal........50c and in the course of time found said voucher again on his desk with a marginal note of mild-eyed wonder and more than idle curiosity, in the handwriting of a man very high up indeed; WHERE can you buy beer in Cristobal? All this and more I learned in the swivel-chair waiting for orders, reading the latest novel that had found its way to Ancon station, and receiving frequent assurances that I should be quite busy enough once I got started. Opposite sat Lieutenant Long pouring choice bits of sub-station orders into the 'phone: "Don't you believe it. That was no accident. He didn't lose everything he had in every pocket rolling around drunk in the street. He's been systematically frisked. Sabe frisked? Get on the job and look into it." For the Lieutenant was one of those scarce and enviable beings who can live with his subordinates as man to man, yet never find an ounce of his authority missing when authority is needed.