The book has no illustrations or index. Purchasers are entitled to a free trial membership in the General Books Club where they can select from more than a million books without charge. Original Published by: Press of the New era printing company in 1915 in 29 pages; Subjects: Logic, Symbolic and mathematical; Mathematics / General; Mathematics / History & Philosophy; Mathematics / Logic; Philosophy / General; Philosophy / Logic; Philosophy / History & Surveys / Modern;