The Best. The Cheapest. The true value of machinery applied to watch-making is not that by its use watches are made rapidly, but that they are made correctly. Very few people know why a Waltham Watch should be superior to any other. In the first place, at Waltham the watch is regarded as only a machine, to be constructed, like any other machine, on mechanical principles. The factory is, indeed, little else than a machine-shop, the principal work in which is not more upon watches than upon machinery to make watches with. If the watches are good, it is because the machinery is good. Of course there must be no defect in the principle of plan or the movement, no mistake in the sizes or shapes of the pieces of which it is composed, nothing wanting in their properties, and no error in their positions. These points once thoroughly settled in regard to each part of every variety of watches, it rests wholly with the machinery, constructed with infinite diversity of form and function, expressly for the purpose, to produce the finished pieces. The method established in every department is the reduplication of parts by mechanical means, and this is carried out on the principle of the most thorough subdivision of labor. By means of multiplying gauges and microscopes, tests and inspection for the detection of wear in cutting tools, and for faults and flaws in steel or stone, are made to accompany the work in every stage, from beginning to end. As a necessary result, the watch goes together a finished machine. Every part is found to fit properly in its place. Every pin may be pushed till it pinches, and every screw turned home. Instead of sluggish and feeble action, the balance, even under the pressure of the lightest mainspring, vibrates with a wide and free motion, and the beat has the clear, ringing sound always characteristic of the Waltham Watch. The machine is a time-keeper from the start. This system of watch-making is unknown in foreign countries, and is entirely original with the Waltham Company. The Company claim that by it they produce watches that cannot be equaled for every quality which makes a watch valuable. Simple in plan, and correct in principle, the movement is not only beautifully finished, substantial, accurate, and cheap, but is uniform to the minutest details, not easily damaged, easily repaired, and when repaired always as good as new. There are different grades of finish in the different varieties of watches made by the Waltham Company, as there are different sizes and shapes to suit all tastes and means; but every watch that bears the genuine trade-mark of "Waltham" is guaranteed to be a good one, and nobody need be afraid to buy it. Purchasers should invariably demand a certificate of genuineness. ROBBINS & APPLETON, New York. "This is just the right kind of Book for Children." MRS. HORACE MANN. OUR WORLD, OR, FIRST LESSONS IN GEOGRAPHY, BY MARY L. HALL. Illustrated with Maps and Numerous Engravings Small Quarto, 118 Pages. Price, go Cents. Copies mailed to Teachers for Examination on receipt of seventy-five cents. JUST PUBLISHED. MAYHEW'S UNIVERSITY BOOK-KEEPING, A Treatise on Business and Accounts. Designed as a Text-Book for Commercial Colleges. 8vo., Muslin, 318 Pages. Price, $250. The "University Book-Keeping" is constructed on the same general plan as the "Practical," but more extended in the higher departments of the science. Besides Accounts, it treats of Banks, both National and Savings; Fire, Marine, and Life Insurance; the Elements of Commercial Law; and many other subjects essential to a good Business Education. It will be found very desirable in the Counting-Room, and for private study. SENT BY MAIL ON RECEIPT OF PRICE. BLANKS to "University Book-Keeping," Cap Size, 8 Books per set, $3.50. MAYHEW'S PRACTICAL BOOK-KEEPING; EMBRACING SINGLE AND DOUBLE ENTRY, COMMERCIAL CALCULATIONS, AND THE PHILOSOPHY AND MORALS OF BUSINESS: By IRA MAYHEW, A. M. 12mo, 228 Pages. Retail Price, 80 Cents. As a text-book for Common Schools the success of this book has been unprecedented. BLANKS, - -to accompany the above (six books in the set), $1.00. KEY TO MAYHEW'S PRAC TICAL BOOK-KEEPING, for the use of Teachers, 80 cents. NICHOLS & HALL, Publishers, 43 Washington Street, Boston. Subscription Price. One Dollar per annum, payable in advance. If delivered by carrier in Boston, One Dollar and Twenty-five Cents. Single copies, 10 cents. All business correspondence concerning the Missionary Herald should be addressed CHARLES HUTCHINS, Missionary House, MARCH HERALDS. Since issuing the March No. it has been ascertaiued that a few copies were imperfect, owing to an error of the binder. Any persons who have received such, will confer a favor by returning them, and perfect copies will be sent. [N. B. Herald.] CHANGE OF POSTAGE RATES. - The rates of postage are changed often. The following list differs from that in March Letters for Missionaries of the Board may be sent to the Treasurer at the Missionary House, Boston, where mails are made up every Tuesday afternoon, for all missions except those at the Sandwich Islands and Micronesia. Letters should be in Boston Tuesday forenoon. Postage CAN BE PREPAID by sending stamps (loose) or currency to the Treasurer, with the letter, and at the following rates: To Constantinople and immediate vicinity, Smyrna, and the Syria Mission, 20 cents per oz. To other parts of Turkey and Persia, about To India and Ceylon, To China and South Africa, To West Africa, 60 66 As letters are sent in packages from the Missionary House, the postage on those of less or greater weight is in the same proportion. Letters for the Sandwich Islands and Micronesia can go by steamer mail to San Francisco, which closes at Boston on the 10th, 20th, and last days of each month. Postage through to Honolulu, 10 cents per oz. Postage on the "Missionary Herald" to Great Britain or Germany, 6 cents; France, 2 cents. RECEIVING AGENTS OF THE BOARD. The following list includes those who have been appointed Receiving Agents by the Prudential Committee, and also the Treasurers of auxiliary and cooperating Societies. Ware, William Hyde. CONNECTICUT. Deep River, John Marvin, New Haven, F. T. Jarman. NEW YORK. Albany, William B. Sprague, Jr. New York City, Rev. G. W. Wood, Utica, J. E. Warner. Watertown, Frederick Baker. PENNSYLVANIA. Philadelphia, Samuel Work. Bd. For. Miss. German Reformed DISTRICT OF COLUMBIA. Washington, Leonidas Coyle. OHIO. Ashtabula, O. H. Fitch. Cincinnati, William Scott. ILLINOIS. Chicago, Rev. S. J. Humphrey. MICHIGAN. Ann Arbor, W. C. Voorheis. MISSOURI. St. Louis, Rev. Charles Peabody. OREGON. Portland, Rev. Geo. H. Atkinson. CALIFORNIA. San Francisco, Edward P. Flint. CANADA EAST. Harrisburg, Rudolph F. Kelker, Tr. Montreal, Benjamin Lyman. The Corresponding Secretaries of the Board are Rev. SELAh B. Treat, Rev. GEORGE W. WOOD, and Rev. N. G. CLARK. Letters relating to the Missions and General Concerns of the Board, may be addressed SECRETARIES OF THE A. B. C. F. M., Missionary House, 33 Pemberton Square, Boston. Letters for the Corresponding Secretary resident in New York, may be addressed REV. GEORGE W. WOOD, Bible House, Astor Place, New York city. Donations and letters relating to the Pecuniary Concerns of the Board, (except letters on the subject of the Missionary Herald,) should be addressed LANGDON S. WARD, Treasurer of the A. B. C. F. M., Missionary House, 33 Pemberton Square, Boston. Letters for the Editor of the Missionary Herald, should be addressed REV. ISAAC R. WORCESTER, Missionary House, 33 Pemberton Square, Boston. Letters relating to the business department of the Herald, subscriptions and remittances for the same, should be addressed CHARLES HUTCHINS, Missionary House, 33 Pemberton Square, Boston. Letters for Rev. Rufus Anderson, D. D., may still be addressed to the Missionary House. GENERAL AGENCIES. The following arrangement has been made in the system of General Agencies, by the Prudential Committee, with a view to efficiency in the raising of funds. The payment of $50 at one time constitutes a minister, and the payment of $100 at one time constitutes any other person, an Honorary Member of the Board. LEGACIES. In making devises and legacies to the Board, the entire corporate name "The American Board of Commissioners for Foreign Missions" tator may be defeated. should be used; otherwise the intent of the tes |