TRAUTWINE'S POCKET-BOOK. Vlthout doubt it has proved itself• to be the most useful haul bouir•iu the language, for the engineering profession.—Engincering and Mining Journal, August 25th, 1888. JOHN WILEY & SONS, I F. & F N. OPON, NEW YORK. LONDON. THE E. S. GREELY & CO. GENERAL ELECTRICAL SUPPLIES, ;.;, 5 and 7 DIEN ST., NEW YORK. I ‘„; ELECTRICAL r4EASUIt EM ENT I NSTIULT. Al ENTS and BATTERIES of ~ the very Highest tirade. ,,; ,, ''' , . and'Constancy, Hit • ', , , • <, Precis i on Rust in ic "--- if and Finish, the i in ~,,„ Ct, the %Voia. , • 3 Catalogue of Standard• Test . 'N, i, , • ..d Instruments furnished ri I I •:, , upon application, Illus. D trated eirettlar:of Lamps I v . i \ and Novelties, upon am ? 1 1 .7. 4 1 intention. kat= i 1 .kM. -MINIATURE INCANDESCENT LAMPS.- No. 2 Planer and Matcher. Planes 24 in. wide, 6 in. thick; matches 12 in. wide; specially designed for custom work in small plan ing mills, carpenter shops, technical schools. col. loges, etc. Makes, suliuk, moh i ngs, beading, flooring, etc, A low priced and a favorite machine. THE ECM CO., 165-185 W. Front St., Cincinnati, Ohio, U. S. A. I 1 11 ONE OF OUR :—SPECIALTIES—: is the ont•tiiting of Colleges, Technical Schools, Religious I nst i• tutions, Trade De• partmente, Ete. No. 2 Universal Wood-Worker. with Upright Mandrel, ;•Grin Head, 111%In. wide Planes and edges at one operation. The Largest Line Will make glue Joints; plane out of wind ; chant. for; cross gain, groove, cut straight, circular in the U. S. or wave moldings, tongue and groove, plane taper, rip and cross-ent sawing, boring, routing, etc. Select From. Send for Catalogue, Information, eto. Originators, Introducers and Constructors I of SCHIFFER I SODS, —›47/1I1c0R$:le-- Have a fine selection of Woolens of the latest and most popular designs. Tlee eery latest shapes 0/ HATS AND CAPS. Geqtleniegs' Fumlishiqg Goods, rine Neelowear a tweelaity. -1 1 * MILITARY * UNIFORMS * ki - For Price, Fit and Quality are Unequaled. State College, Penna. WOOD WORKING MACHINERY OF TIIE MOST mom and PROGRESSIVE UTE