The last or sixth edition of my Elements of Geology was already out of print before the end of 1868, in which year I brought out the tenth edition of my Principles of Geology. In writing the last-mentioned work I had been called upon to pass in review almost all the leading points of speculation and controversy to which the rapid advance of the science had given rise, and when I proposed to bring out a new edition of theE lements I was strongly urged by my friends not to repeat these theoretical discussions, but to confine myself in the new treatise to those parts of theE lements which were most indispensable to a beginner. This was to revert, to a certain extent, to the original plan of the first edition; but I found, after omitting a great number of subjects, that the necessity of bringing up to the day those which remained, and adverting, however briefly, to new discoveries, made it most difliicult to confine the proposed abridgment within moderate limits. Some chapters had to be entirely recast, some additional illustrations to be introduced, and figures of some organic remains to be replaced by new ones from specimens more perfect than those which had been at my command on former occasions. By these changes the work assumed a form so different from the sixth edition of theE lements, that I resolved to give it a new title and call it theS tudent sE lements of Geology. In executing this task I have found it very difficult to meet the requirements of those who are entirely ignorant of the science.(Typographical errors above are due to OCR software and don't occur in the book.)About the Publisher Forgotten Books is a publisher of historical writings, such as: Philosophy, Classics, Science, Religion, History, Folklore and Mythology.Forgotten Books' Classic Reprint Series utilizes the latest technology to regenerate facsimiles of historically important writings. Careful attention
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