=ENGINEERING MATHEMATICS.= Simply explained. A text-book for students, apprentices and engineers. By H. H. HARRISON. =165 pages, 59 diagrams, cloth, 75c.= =ALGEBRA SELF-TAUGHT.= By W. P. HIGGS. 7th edition. The simplest and best book for beginners, mechanics, young engineers and electricians. Commencing from the very beginning, and advancing step by step, with many practical examples worked out. The signs given are fully explained. The language used is so simple that a student can readily master algebra by a little home study. This is the book to help the young man get into a better position. =Bound in cloth, 60c.= =EDUCATIONAL WOODWORK.= By A. C. HORTH. A complete manual for teachers and organizers of woodworking classes. Contents of Chapters: 1. First Year Course. 2. Second Year Course. 3. Third Year Course. 4. Fittings and Furniture. 5. Discipline. 6. Organization and Method. 7. The Instruction of the Physically and Mentally Deficient and Blind. 8. Object Lessons. Fully illustrated with reproductions from photographs, drawings, and facsimile black-board lessons. =158 pages, 12mo., cloth, $1.00 net.= =WOODWORK JOINTS.= How to make and where to use them; including mortise and tenon joints, lap joints, dovetail joints, glue joints and scarfing joints. With a chapter on circular woodwork, revised and enlarged edition, 101 pages, 178 illustrations. =25c.= =THE BEGINNER'S GUIDE TO FRETWORK.= Containing full instructions on the Use of Tools and Materials; and six full size Fretwork designs. With 39 pages and 26 illustrations. =25c.= =VENEERING, MARQUETRY AND INLAY.= A practical instruction book in the art of Decorating Woodwork by these methods. By P. A. WELLS. 79 pages, 37 illustrations. =25c.= =SOFT WOODS AND COLONIAL TIMBERS.= The selection and Uses of Soft Woods and Colonial Timbers. The cultivation, cutting and seasoning. 57 pages, 15 illustrations. =25c.= =HARD WOODS, ENGLISH AND FOREIGN.= A practical description of Hard and Fancy Woods used by the carpenter and cabinet maker. By P. A. WELLS, 79 pages, 19 illustrations, =25c.= * * * * * Spons' Mechanics Own Book =A WORK THAT SHOULD BE IN YOUR BOOKCASE.= The general method of treatment of each subject, is first the raw materials worked upon, its characteristics, variations and suitability; secondly, the tools used, the sharpening and use; thirdly, devoted to typical examples of work to be done, materials, and how to do similar work, etc. THE FOLLOWING ARE THE PRINCIPAL CONTENTS.