Recent gifts to the engineering societies library

During the past twenty years the Westinghouse Electric & Manufacturing Company and the General Electric Company have collected a valuable library of some nine thousand volumes on electricity. The collection was intended especially for use in patent searches and is particularly rich in patent material. Files of all the principal patents relating to electric light and power issued by America, England, France and Germany are present, together with copies of the patents owned or controlled by the two companies. Another feature, and one of unusual value, is a series of volumes containing the records of the important adjudicated patent causes of these companies and their predecessors during the past twenty-five years, and forming a storehouse of electrical history. There are also files of about one hundred electrical periodicals.