ENGINEER'S VALUING ASSISTANT BEING A PRACTICAL TREATISE ON THE VALUATION OF COLLIERIES AND OTHER MINES WITH RULES, FORMULÆ, AND EXAMPLES ALSO A SET OF VALUATION TABLES CALCULATED ON THE PRINCIPLE OF ALLOWING INTEREST TO A PURCHASER OF ANY ANNUITY, BENEFIT, OR OF INTEREST AND TABLES OF VALUE SHOWING THE DISCREPANCIES EXISTING IN THE ORDINARY TABLES OF PRESENT VALUES AND THE ERRORS CREATED BY THEM BY H. D. HOSKOLD " CIVIL AND MINING ENGINEER; CHIEF OF THE ARGENTINE GOVERNMENT WITH AN INTRODUCTORY NOTE BY THE LATE PETER GRAY HONORARY MEMBER OF THE INSTITUTE OF ACTUARIES AUTHOR OF TABLES AND FORMULE FOR THE COMPUTATION OF LIFE CONTINGENCIES ETC. SECOND EDITION LONGMANS, GREEN, AND CO. 39 PATERNOSTER ROW, LONDON NEW YORK AND BOMBAY 1905 All rights reserved JUL 23 1907 MLFD 1173 PREFACE TO THE PRESENT EDITION. SOON after the first edition of this work appeared in 1877, copies of it became so scarce that suggestions were frequently made to the author to publish a new edition of it; but, at that time, important professional duties and undertakings led him to foreign countries, including the Argentine Republic, in the latter of which he has had the honour of occupying the position of Chief Advising and Acting Mining Engineer to the National Government for over a period of 18 years. The onerous duties of that office, and other matters connected therewith, absorbed the whole attention of the author, and it is only recently that he has been able to prepare a second edition of his Engineer's Valuing Assistant' for the press. For various practical reasons, the original book of 1877 has been reduced in bulk; but, at the same time, everything essentially necessary to aid the profession in the valuation of mines and other properties has been retained in the present edition. The deferred periods, in Table X, have been reduced from 10 to 4 years, for the reason that it is considered that a period of from 4 to 5 years is a sufficiently long time to wait before benefit accrues from mining undertakings. |