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TABLE OF CONTENTS Page Introduction (By Page Lawrence, C.P.A.) 1 . . Preface (By the Author) 3 . . . Partial Bibliography 5 . Historical References Historical (By the Author) 8 Discursion in Theory. (" ) 14 Lucas Pacioli Reproduced (Author's explanation) 17 Title Page (photographic reproduction) 18 What was his real name 21 Abbreviations used 24-25 Peculiar sayings 27 Comparative index of the earliest writers 29 Entire Text (photographic reproduction) 32to80 Complete translation of entire text 33to81 Domenico Manzoni Journal (photographic reproduction) 82 it Author'8 notes on reproduction 83 it Abstracts from text 84 Rules for Journalizing 85 Index to original text 85 Don Angelo Pietra Journal and Ledger reproduced (Notes by Author) 87 II ii Index to original text 89 11 1 Extent of original text 91 II ii Title Page (photographic reproduction) 93 " " II ii Chart 94 ( " " ) 1 ii Journal ( " " ) 95 to96 II CI Ledger 97 to107 ( ) Mattec Mainardi Journal reproduced (Notes by Author) 107 Title Page (photographic reproduction) 108 " " Introduction to Executor's Books ( " " ) 109 Journal 110 Jan Ympyn Christoffels Title Page ( " " ) 112 ( ) it ii it Author's notes 113 Simon Stevin Journal and Ledger reproduced (Notes by Author) 114-118 Title Page (photographicreproduction) .119 " Balance Sheet ( " " ). .120 Profit and Loss Account .121 ( ) Journal ( " ). .122to127 Ledger ( ). .128 to135 " " Controlling Account .136 ( ) Richard Dafforne Partially reproduced (Notes by Author) .137 Title Page (photographicreproduction) .140 " " Epistle Dedicatory .141 ( " ) Antiquity of Bookkeeping .144 Index ( " " )) .145 ( " " Text ( )• .147 to171 Journal ( " ). .172 Ledger ( " " ). .174to179 Trial Balance .180 ( ) Afterword. .182 INTRODUCTION By Page Lawrence, C.P.A. Nearly all historians, when tracing the growth of an art or science from mere empiricism to the estab- lishment of recognized principles, are confronted with an apparent insurmountable gap or complete silence during the period known in history as the Dark Ages. Archaeological and historical researches have convi—nced this civilization that in Ancient Babylon, Greece and Rome there was a high state of civilization both industrial and social. Today we may study Aristotle's politics with great profit in our attempts to understand the political and economic conditions confronting this generation. An acquaintance with the Greek philosophers is es- sential in understanding our present philosophical thought. It would seem that, since we find so much help in consulting these ancient writers in an attempt to solve the political problems of today which are presented by this complex civilization, in a large measure at least our mentors must have been confronted with the same economic and industrial difficulties that we are attempting to solve now as accountants. One is convinced that the ancient writers on political economy and commerce were closely allied with the scribes or accountants who recorded the business transactions of those days. This allegiance seems to have been lost after the Roman supremacy (and the consequent growth and spread of commerce), and it is only within recent years that the modern economist and accountant has acknowledged that a truer un- derstanding of modern commerce can be had with cooperation and that the two sciences (economics and accounting) are finding so much in common that each is dependent upon the other for a full understanding of modern business conditions. Mr. John P. Young, Editor of the San Francisco Chronicle, ably presented accounting in antiquity before the convention of the American Association of Public Accountants at San Francisco (Year Book 1911, page 153). He showed that Rome in Cicero's time was dependent upon the independent verifica- tion of accounts and statements thereof by one skilled in accountancy. The familiarity with which he mentions the accountant would seem to indicate that his place in the Roman social organization was well established. However, after the recorded utterances of Cicero the historian finds in the pages of history no further mention of those individuals acknowledged to be skilled in accounts, which we are pleased to call account- ants, until the writings of Pacioli in 1494 and Stevin in 1604. It seems especially appropriate that one so greatly interested as the author in that work dear to the hearts of all progressive accountants, and who has done so much to place the education of the accountant on equal footing with that of law or medicine, should be the first of modern times to translate this first re- corded book of the principles of debit and credit into the English language. It is a significant fact that the rules and principles elucidated by Pacioli are contained in a book given over to mathematics. One cannot help but believe that the derivation of double-entry bookkeeping is an explanation of the algebraic equation used with such skill by the ancient Greek mathematicians, applied practically to the scientific recording of business transactions for, just as in algebra, the equation once established cannot be changed but by the addition of positive or negative quantities. This work will give an added aasurance that the apparently empirical rules of commerce are based upon an ancient scientific and mathematical foundation, to those who have attempted to instill into the commercial mind the idea that accountancy is a science, the prime requisite of a mastery of which is a thor- ough education in the theory of economics and allied sciences supplemented by practical experimentation in the application of formulae to practical business situations. The accountant has to correct constantly, or at least modify, the attitude of the business man toward matters which are his dearest heirlooms handed down from the days of the Ancient Guild system, i. e., that the only way to learn how to do business is to do it along the rule-of-thumb method communicated from father to son by word of mouth. Accountants, who remember the dearth of accountancy literature in this country up to a few short years ago, are dumbfounded at the mass of accountancy publications which are constantly flooding the market at this time. While I believe that the profession of accountancy as a whole recognizes the ines- timable value of these publications, one cannot help but think in perusing their pages that they are largely influenced by the empirical methods of general business, rather than based on scientific principles. In other words, on "how" but never "why." We are wont to look in vain through mazes of descriptions, forms and precedence of some particular business enterprise for a principle of accountancy which can be applied to the specific difficulty we have in hand. It should be the aim of some of the brilliant members of the profession of accountancy to take the great mass of historical records which have been published in the last few years of how this or that business should be kept and, with the aid of recognized authorities on economics, codify, with quotation of their source, the scattered and ill defined principles of accountancy for the benefit of accountancy educa- tion, and to this end no better examples of axiomatic principles can be had than in the books of Pacioli, Pietra and Stevin. — The author, recognizing from his experience as an educator in accountancy (coming as he did from Holland some twenty years ago without knowledge of American commercial practices or language) the lack of clearly expressed principles in accountancy, commenced researches which have finally culminated in this published translation in English of the first known writings on the subject of double entry book- keeping. At even- turn, in the preachment of the seientifie principles of his profession to the commercial mind, in his successful efforts for the passage of the Certified Public Accounts law in Colorado, then in his work as secretary of the first examining board in that state, in his labors as Dean of the School of Commerce, Accounts and Finance of The University of Denver, and as an instructor on practical and theoretical ac- countancy subjects and, finally as Chairman of the K<lueational Committee of The American Association of Public Accountants, the author has ever been confronted with the dearth of practical exemplification, his- torical or otherwise, of the true foundation of what in modern times might be called the Art of Accountancy. To weld together into a well balanced whole the two plans of accountancy education, as embraced in the eurrieuli of universities and colleges offering training to the embryo accountant, has long been the goal of his educational endeavors, i. e., to leaven the purely academic training by instructors or professors whose own knowledge of accountancy is in the main pedagogical, with the practical knowledge as imparted by the practicing accountant and the business man. (The author, in the American Association of Public Accountants Year Books for 1911-12-13 and 14, has gone into this subject extensively, showing that educa- tional institutions of the country have chosen either the one or the other of the two methods of teaching the academic training in pure theory, treated in much the same manner as economic subjects are presented and without the same degree of accuracy, or the practical lecturing upon accounta—ncy subjects by practic- ing accountants and business men, supplemented by the best text books obtainable and urging the while the necessity for the development together of the two accountancy educational plans, as is done in Great Britain.) While it is true that to men of little or no practical experience in accountancy mustbe given the credit for producing some of the finest examples of purely theoretical accounting which the literature of accoun- tancy has today, the first mentioned criticism that this pedagogical instruction does not teach the actual application of the theory to modern business, again applies. On the other hand, with the practical ac- countant as the instructor or the writer of text books, too little cannot be said of the difficulty he has in imparting to students and laymen the principles which seem exceedingly clear to him. And it was through this research, this labor to combine in accountancy education theory with practice and practice with theory, that this book was born. It is apparent in reading the ancient works of Pacioli, of Stevin and Pietra, in their exhaustive explanations and their lengthy and precise instructions that in their endeavors to system- atize the recording of the transactions of commerce of their time, they encountered many of the same sort of, if not the identical, problems with which we are confronted today. The modern translations of their works, with the author's own views presented as notes, it is believed will shed some light into the darkness which has so long shrouded the actual foundation of the practice and the theory of the profession of pub- lic accountancy. Denver, Colorado, August, 1914.