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In preparing this volume, I have attempted to write a descriptive essay on the past and present monetary systems of the world, the materials employed to make money, the regulations under which the coins are struck and issued, the natural laws which govern their circulation, the several modes in which they may be replaced by the use of paper documents, and finally, the method in which the use of money is immensely economized by the cheque and clearing system now being extended and perfected.-from the PrefaceAs the global economy reels from ongoing threats of terrorism, skyrocketing oil prices, war, and political strife, this classic exploration of the basics of our sophisticated economic environment offers a profound look at what we often take for granted. Jevons, a pioneer of modern economic thought, examines:· the early history of money· the invention of coins· the principles of circulation· the varieties of promissory notes· the fundamental nature of credit· the basis of a national economy· and much more.First published in 1875, this remains a vital foundation for understanding the world monetary situation we face in the 21st century.English economist and logician W. STANLEY JEVONS (1835-1882) was born in Liverpool. He studied chemistry and botany at University College, London, and was later professor of logic and political economy at Owens College, Manchester. He is also the author of The Theory of Political Economy (1871) and The State in Relation to Labour (1882).

Englishman OLIVER HEAVISIDE (1850-1925) left school at 16 to teach himself electrical engineering, eventually becoming a renowned mathematician and one of the world's premiere authorities on electromagnetic theory and its applications for communication, including the telegraph and telephone.Here in three volumes are his collected writings on electromagnetic theory-Volume I was first published in 1893. This is a catalog of the bulk of his postulations, theorems, proofs, and common problems (and solutions) in electromagnetism, many of which had been published in article form.Part scientific history-including references to some contemporary criticisms, long since shown to be poorly based, of Heaviside's scholarship-and part guide to understanding a complex applied science, this work shows both the genius and the eccentricity of a man whose work includes precursory theories to Einstein, and revolutionary principles that today are the commonly assumed truths in the field of electrical engineering.