as required when on actual duty in the railway post-office. The number of separations varies according to the connections due to be made; when the line is through a thickly-settled country, the separations are made in fine detail. In the State of Massachusetts there are seven hundred and seventy-two post-offices; and the number of separations made by one line is upwards of eighty. On the train it is necessary to make many (what are known as) direct packages that the examination does not call for. Account is taken of the time consumed in "sticking" the cards, and questions asked to test the knowledge of connections. A large number of questions are asked relating to the Postal Laws and Regulations, as affecting the Railway Mail Service; these latter questions vary in number from fifty to one hundred. When practicable, during the probationary period of six months, one examination is held each month, taking a different State each time. The results of these examinations are placed on record, and at the expiration of the probationary term, this record, together with the list of errors in sending mail, are forwarded to the Honorable William B. Thompson, General Superintendent of the Railway Mail Service, in Washington, District of Columbia, with a recommendation that the clerk be permanently appointed or dropped out of the service. These examinations are held at intervals among all the clerks to test their efficiency, and as an incentive to study, to keep fresh in their minds the proper disposition of the important mails passing through their hands. In these examinations a good-natured rivalry exists, and a vigilant eye is kept by the clerks that their line shall make as high an average per centage, or, if possible, higher than any other. The per centage of correctness rarely falls below seventy-five; an average is generally made of ninety-five per cent. The list of errors made is closely scanned by better-informed clerks, and no stone left unturned by them to clear their record, and to satisfactorily settle disputed points. These discussions and inquiries are invited, not only that all may feel satisfied with the result, but also that much valuable information is frequently elicited from the clerks, who in many cases are situated advantageously to see where practical benefits may be attained.