NON-RESIDENT.

MR. JOSHUA W. ATLEE, Riverton, N. J.

MR. M. J. CAPLES, Vice-President, The Chesapeake & Ohio Railway Company, Richmond, Va.

CHIEF CONSTRUCTOR W. L. CAPPS, U.S.N., Board on Hull Changes, 412 Post Office Building, Philadelphia, Pa.

PROF. J. IRVIN CHAFFEE, Webb's Academy and Home for Shipbuilders, Sedgwick Avenue and 188th Street, New York, N. Y.

MR. ROBERT CLUETT, Southfields, Williamstown, Mass.

MR. W. B. COGS WELL, Vice-President and Managing Director, The Solvay Process Company, Syracuse, N. Y.

PROF. R. B. DALE, Iowa City, Iowa.

COMMANDER D. E. DISMUKES, U.S.N., Naval Inspector of Ordnance, Cramp's Shipyard, Philadelphia, Pa.

MR. JAMES DONALD, Fore River Shipyard, Quincy, Mass.

DR. H. S. DRINKER, President, Lehigh University, South Bethlehem, Pa.
MR. THOS. E. DURBAN, General Manager, Erie City Iron Works, Erie, Pa.
MR. M. B. FELDMANN, American Gas and Electric Company, 30 Church
Street, New York, N. Y.

MR. C. B. GALVIN, Cornwall-on-Hudson, N. Y.

MR. ALEX. P. GEST, 72 South Clinton Avenue, Trenton, N. J.

CAPTAIN BAIRD HALBERSTADT, Morris Building, Pottsville, Pa.

CAPTAIN R. T. HALL, U.S.N., Inspector of Machinery, Wm. Cramp & Sons, Philadelphia, Pa.

MR. J. DAWSON HAWKINS, Colorado Springs, Colo.

MR. J. M. HOPWOOD, Superintendent, Butler Light, Heat and Motor Company, Butler, Pa.

MR. EDWARD S. HUTCHINSON, 34 South State Street, Newtown, Pa.
MR. HERBERT S. IDE, Troy, N. Y.

MR. F. D. NEWBURY, Westinghouse Electric and Manufacturing Company,
East Pittsburgh, Pa.

MR. C. E. POSTLETHWAITE, Manager of Sales, Pressed Steel Car Company, Pittsburgh, Pa.

PROF. ALBERT G. RAU, Dean, Moravian College, Bethlehem, Pa.

MR. EDWARD H. TAIT, 501 Paxinosa Avenue, Easton, Pa.

MR. L. H. THULLEN, Triumph Electric Company, Cincinnati, Ohio.

J. T. AINSLIE WALKER, F.R.S.M., F.C.S., Whitehall Building, New York, N. Y.

MR. J. T. WALLIS, Superintendent Motive Power, Pennsylvania Railroad Company, Altoona, Pa.

MR. GEO. B. WELLINGTON, 17 First Street, Troy, N. Y.

Changes of Address.

MR. NICHOLAS W. AKIMOFF, 1013 Harrison Building, Philadelphia, Pa.
MR. W. H. ALBERTSON, 334 North Preston Street, Philadelphia, Pa.

MR. FRANKLIN BAKER, JR., Corner Wayne Avenue and Hortter Street,
Germantown, Philadelphia, Pa.

MR. J. B. BAKER, Thirty-second and Powelton Avenue, Philadelphia, Pa.
MR. W. P. BEMENT, 743 Real Estate Trust Building, Philadelphia, Pa.
PROF. JAMES C. BIDDLE, JR., Abbey of Gethsemani, Trappist P. O., Ky.
MR. GEORGE BREED, 1516 Commonwealth Trust Building, Philadelphia, Pa.
F. T. CHAMBERS, ESQ., 1530 Pine Street, Philadelphia, Pa.
MR. EDWARD B. CLARK, 1018 Munsey Building, Washington, D. C.
MR. E. W. DESHER, 134 South Fifty-fourth Street, Philadelphia, Pa.
MR. EVANS R. Dick, 30 Broad Street, New York, N. Y.

MR. PAUL DIDIER, Principal Assistant Engineer, Baltimore & Ohio Railroad
Company, N. S. Pittsburgh, Pa.

MR. Wм. A. DOBLE, Nineteenth and Harrison Streets, San Francisco, Cal. MR. THOMAS J. DOLAN, 2107 Walnut Street, Philadelphia, Pa.

MR. Wм. J. DOYLE, 1519 Sansom Street, Philadelphia, Pa.

MARY C. DuBois, 1733 Pine Street, Philadelphia, Pa.

MR. J. H. EASTWICK, 2260 North Fifty-third Street, Philadelphia, Pa.
MR. WM. P. EVANS, 500 North Fifteenth Street, Philadelphia, Pa.
H. B. GILL, Esq., 518 Real Estate Trust Building, Philadelphia, Pa.
MR. CHARLES M. HALL, 131 Buffalo Avenue, Niagara Falls, N. Y.
MR. F. T. HASHKA, Tiffany & Co., Thirty-seventh Street and Fifth Avenue,
New York, N. Y.

MR. C. KIRCHHOFF, 587 Riverside Drive, New York, N. Y.

MR. SIMON I. KOHN, 720 Market Street, Philadelphia, Pa.

MR. G. C. LEIDY, Whitehall Hotel, 107th Street, Cleveland, Ohio.

MR. E. F. MASON, University Club, Altoona, Pa.

MR. JAMES HARTLEY MERRICK, Roxborough, Philadelphia, Pa.

MR. Wм. H. MERRICK, Schoolhouse Lane, Germantown, Philadelphia, Pa.

MR. HENRY F. MITCHELL, Thirty-sixth and Reed Streets, Philadelphia, Pa.

MR. LOUIS M. PAWLETT, 231 Fairfield Avenue, Bridgeport, Conn.

MR. KURT W. PEUCKERT, Sharon Hill, Delaware County, Pa.

MR. JOHN T. RAMSDEN, 1911 North Seventeenth Street, Philadelphia, Pa.

MR. JESSE W. RENO, 684 St. Nicholas Avenue, New York, N. Y.

MR. EDWARD ROWLAND, W. & H. Rowland, Inc., Frankford, Philadelphia, Pa.

MR. J. B. RUM BOUGH, P. O. Box 912, Asheville, N. C.

MR. SAMUEL SHOEMAKER, 1831 Land Title Building, Philadelphia, Pa.

MR. ARTHUR H. THOMAS, West Washington Square, Philadelphia, Pa.

MRS. F. VON A. CABEEN, New Britain, Bucks County, Pa.

MR. ALOIS VON ISAKOVICS, Synfleur Scientific Laboratories, Monticello, N. Y.

MR. GEORGE VON UTASSY, 381 Fourth Avenue, New York, N. Y.

MR. FRANCIS R. WELSH, 109 South Fourth Street, Philadelphia, Pa.

MR. JOHN R. WIGGINS, 1215 Filbert Street, Philadelphia, Pa.

MR. H. W. WILSON, 1060 Drexel Building, Philadelphia, Pa.

J. L. WILSON, Esq., Room 608, 608 Chestnut Street, Philadelphia, Pa.
MR. JOHN JACOB WOLF, 927 North Fifth Street, Philadelphia, Pa.
MR. ASA W. WHITNEY, 500 Georgia Avenue, Bristol, Tenn.
DR. FRANCIS WYATT, 20 Fifth Avenue, New York, N. Y.
LIEUT. A. B. WYCKOFF, 131 East H Street, Ontario, Cal.

NECROLOGY.

William Laws Boswell was born in Philadelphia on June 22, 1828. He was educated in the public and private schools, and finally attended the University of Pennsylvania, where he was graduated in 1848. Later, he became an instructor in Dickinson College, after which he was ordained to the ministry, and was a member of the Philadelphia Methodist Episcopal Conference three years. He finally became an insurance broker, in which business he continued to 1904.

Mr. Boswell was a trustee of Dickinson College. He was elected to membership in the Institute in 1872, and became a life member ten years later.

Mr. George Burnham, 3401 Powelton Avenue, Philadelphia, Pa.
Mr. F. F. Milne, 1714 Spruce Street, Philadelphia, Pa..

LIBRARY NOTES.

Purchases.

American Institute of Chemical Engineers, Transactions, vol. iv, 1912.
BOOTH, W. H., and J. B. C. KERSHAW.-Smoke Prevention. 1906.
BOYLE, R., and E. H. AMAGAT.-The Laws of Gases. 1899.

BUCHANAN, J. F.-Practical Alloying. 1910.

CARNOT, S., and others.-The Second Law of Thermodynamics. 1899. CRANE, W. R.-Index of Mining Engineering Literature, vol. ii, 1912. DEINHARD, K., and A. SCHLOMANN.-Illustrated Technical Dictionary, vols. ii-iv. 1908.

EULER, H.-General Chemistry of the Enzymes. 1912.

FRAUNHOFER, J. VON.-Prismatic and Diffraction Spectra. 1899.
GAY-LUSSAC and others.-The Free Expansion of Gases. 1898.

GUELDNER, H.-The Design and Construction of Internal Combustion
Engines. 1910.

HARGER, W. G., and E. A. BONNEY.-Handbook for Highway Engineers.

1912.

HILDITCH, T. P.-A Concise History of Chemistry. 1911.

HISCOX, G. D.-Mechanical Appliances. 1910.

HOGNON, J.-Traite d'analyses chimiques metallurgiques. 1911.

International Catalogue of Scientific Literature. E. Tenth annual issue.

1912.

Jahrbuch der Chemie. 1911.

JAMIESON, A.-A Text-book of Applied Mechanics. Five volumes. 1910

1912.

KAYSER, H.-Handbuch der Spectroscopie, vol. vi, 1912.

KOEHLER, H.-Die Fabrikation des Russes und der Schwaerze. 1912.

LINCOLN, H. C.-Steam and Hot-water Heating. 1912.

MERRIMAN, M.—Treatise on Hydraulics. 1912.

OGDEN, H. N., and H. B. CLEVELAND.-Practical Methods of Sewage Dis-

posal. 1912.

PAGE, L. W.-Roads, Paths, and Bridges. 1912.

PFEFFER, W., and others.-The Modern Theory of Solution. 1899.

SODDY, F.-Matter and Energy. No date.

SWINBURNE, J.-Entropy. 1904.

TUTTON, A. E. H.-Crystals. 1911.

WADDELL and HARRINGTON.-Addresses to Engineering Students. 1912.
WALTON, W.-A Collection of Problems in Illustration of the Principles of
Theoretical Mechanics. 1876.

Gifts.

American Blower Company, Catalogue of Products. Detroit, no date. (From
the Company.)

American Railway Master Mechanics' Association, Proceedings, vol. xlv,
1912. Chicago, 1912. (From the Association.)

American Rolling Mill Company, Methods for the Analysis of Iron and
Steel used in their Laboratories. Middletown, Ohio, 1912. (From the
Company.)

Amsterdam Royal Academy of Sciences, Year Book for 1911 and Proceedings
of the Section of Science. Amsterdam, 1911-12. (From the Academy.)
Baylor University, Annual Report of the President and Trustees, October,
1912. Waco, Tex., no date. (From the University.)

Chicago, Department of Smoke Inspection, Report for February, 1911, and
February, 1912. Chicago, 1911-12. (From the Department.)

Cooper (C. and G.) Company, Catalogue of Cooper Gas Engines. Mount
Vernon, Ohio, 1912. (From the Company.)

Great Britain, Board of Trade, Report on Changes in Rates of Wages and
Hours of Labour in the United Kingdom, 1911. London, 1911. (From
the Department of Labour.)

Herculanum et Pompéi, Recueil général des peintures, bronzes, mosaïques,
etc., découverts jusqu'a ce jour, et reproduits d'après le antichita di
Ercolano, il museo Borbonico et tous les ouvrages analogues par H.
Roux Ainé. Paris, 1861-1863. Eight volumes. (From Mr. Richard
Waln Meirs.)

Industrial Works, Catalogue of Railroad and Commercial Cranes. Bay
City, Mich., no date. (From the Industrial Works.)

Institution of Mining and Metallurgy, Transactions 21st Session, 1911-12,
vol. xxi. London, 1912. (From the Institution.)

Iowa Board of Railroad Commissioners, Annual Report for 1911. Des
Moines, 1912. (From the Commission.)

Isthmian Canal Commission, Report on the Panama Canal Traffic and Tolls,
by Emory R. Johnson. Washington, D. C., 1912. (From Mr. E. R.
Johnson.)

Locomobile Company of America, The Car of 1912. Bridgeport, Conn.,
1912. (From Mr. John T. Morris.)

Minnesota University, Special Bulletin, vol. i, No. 10, vol. iii, No. 7, vol. v,
No. 7, vol. vii, No. 14, Catalogue for 1896-1897, 1906-1911. Minneapolis,
no date. (From the University.)

Murphy Iron Works, Catalogue of the Murphy Automatic Furnace. Detroit,
no date. (From the Works.)

National Machinery Company, Catalogue of Products Manufactured by the
National Machinery Company. Tiffin, Ohio, no date. (From the
Company.)

Neptune Motor Company, Catalogue of Trident Water Meters. New
York, 1912. (From the Company.)

New York Public Service Commission, Annual Report, 1910, Pt. 4; 1911,
Pt. 1. Albany, no date. (From the Commission.)

New York State Education Department, Annual Report for 1912. Albany,
1912. (From the State Library.)

North Carolina Geological and Economic Survey, Economic Paper No. 28,
Culverts and Small Bridges for Country Roads in North Carolina.
Raleigh, 1912. (From the Survey.)

Ohio Locomotive Crane Company, Catalogue of Locomotive Cranes.
Bucyrus, Ohio, 1911. (From the Company.)

Palmer, Truman G., Sugar at a Glance. Charts and Data. Washington,
D. C., 1912. (From the Hon. H. C. Lodge.)

Permanent International Association of Navigation Congress, 12th Con-
gress, Philadelphia, Pa., 1912. Ist Section, Inland Navigation, 2d
Section, Ocean Navigation. Philadelphia, no date. (From Mr. James
Donald.)

Philadelphia Bureau of Water, Annual Report, 1911. Philadelphia, 1911.
(From the Bureau.)

Power Specialty Company, The Foster Superheater. Philadelphia, 1911.
(From the Company.)

Richardson, George W., The Slide Rule Simplified. Chicago, 1911. (From
the author.)

Smith College Bulletin, Official Circular, 1912-1913. Northampton, Mass.,
1912. (From the College.)

Southern Railway Company, 12th-16th, 18th Annual Report. New York,
no date. (From the Company.)

Texas Bureau of Economic Geology and Technology, A Reconnaissance
Report on the Geology of Oil and Gas Fields of Wichita and Clay
Counties. Austin, Tex., 1912. (From the University of Texas.)
Thompson, Slason, The Railway Library, 1911. Chicago, 1912. (From the
author.)

Triumph Electric Company, Bulletin for August, 1910, to August, 1912.
Cincinnati, no date. (From the Company.)

Union Fibre Company, Insulation of Railway Equipment. Winona, Minn.,
1912. (From the Company.)

U. S. Bureau of Navigation, Appendix to the Report of the Chief. 1898.
Washington, 1898. (From Prof. Lewis M. Haupt.)