Contributions to Economic Geology, 1902 (1903) is a book written by Samuel Franklin Emmons, an American geologist who made significant contributions to the field of economic geology. The book contains a collection of Emmons' writings on various topics related to economic geology, including mineral deposits, mining techniques, and geological surveys. The book is divided into several chapters, each of which covers a different aspect of economic geology. Some of the topics covered in the book include the geology of gold and silver deposits, the use of electricity in mining, and the geological survey of Alaska. The book is a valuable resource for anyone interested in the history of economic geology or the field of geology in general. It is also a useful reference for geologists, mining engineers, and others working in the field of economic geology.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.