E. B. PHELPS (with W. T. CARPENTER).-The Sterilization of Sewage Filter Effluents. Technology Quarterly, Vol. XIX., pp. 382-403, December, 1906.

E. B. PHELPS (with C.-E. A. WINSLOW).-On the Use of Methylene Blue in Testing Sewage Effluents. Journal of Infectious Diseases, Supplement No. 3, pp. 1-13, May, 1907.

E. B. PHELPS.-The Prevention of Stream Pollution by Strawboard Waste. United States Geological Survey Water Supply Paper No. 189. Technology Quarterly, Vol. XX., p. 292.

E. B. PHELPS.-Report to the New Jersey State Sewerage Commission on an Outbreak of Typhoid Fever at the State Hospital for the Insane at Trenton. Engineering News, Vol. LVIII., No. 14, pp. 353, 354, Oct. 3,

1907.

E. B. PHELPS.-See C.-E. A. Winslow.

A. W. WEYSSE.-Eine anatomisch-physiologische Studie des BrustKorbes vermittelst des Brust-Pantographen. Fr. Reinhardt. Universitäts-Buchdruckerei, Basel, July, 1907.

W. L. UNDERWOOD.-Some Personal Experiences with the Gypsy and the Brown-tail Moth. American Journal of Public Hygiene and Journal Massachusetts Association of Boards of Health, Vol. XVI., pp. 569-590.

C. F. STORY.-See C.-E. A. Winslow.

H. C. MCRAE.-See C.-E. A. Winslow.

F. A. WOODS.-The Non-inheritance of Sex in Man. Biometrika, Vol. V., Parts I. and II., pp. 73–78.

PHYSICS.

H. M. GOODWIN. See Publications of Research Laboratory of Physical Chemistry.

C. L. NORTON.. Asbestos Wood.

p. 835.

Electrical World, Vol. XLIX., 1907,

C. L. NORTON.-Asbestos Wood. Insurance Engineering, Vol. XIII., March, 1907.

C. L. NORTON.--A New Fire Retardent. Insurance Engineering, Vol. XIII., April, 1907.

C. L. NORTON.—Asbestos Wood. The Indian Electrical, Mechanical, and Textile News, Bombay, India, October, 1907, Vol. V., No. 2, p. 45. CHARLES J. EMERSON.-The Effect of Oil in the Cylinder of an Internal Combustion Motor. The Horseless Age, Vol. XIX., p. 554, 1907. D. F. COMSTOCK.-Experimental Investigation of the Effect of Perma

nent Magnetism in Iron on the Permeability for very Small Forces. Inaugural Dissertation, University of Basel, 1906.

A. E. GREENE and F. S. MACGREGOR.-The Electrothermic Reduction of Iron Ores. Electrochemical and Metallurgical Industry, Vol. V., 1907, p. 367.

GEOLOGY.

CHARLES H. CLAPP.-The Clays of North Dakota. Fourth Biennial Report. Geological Survey of North Dakota, 1907.

.

CHARLES H. CLAPP.-The Clays of North Dakota. Economic Geology, Vol. II., No. 6.

REGINALD A. DALY.-The Limeless Ocean of pre-Cambrian Time. American Journal of Science, February, 1907.

R. A. DALY.-Report on Field Operations in the Geology of the Mountains crossed by the International Boundary (49th Parallel). In Report of the Chief Astronomer, Department of the Interior, Ottawa, Canada, 1907.

HERVEY W. SHIMER (with A. W. GRABAU).—Index Fossils of North America, Part II. School of Mines Quarterly, New York, 1907.

HERVEY W. SHIMER.-A Lower-middle Cambrian Transition Fauna from Braintree, Mass. American Journal Science, Vol. XXIV., pp. 176– 178, 1907.

HERVEY W. SHIMER.-Geology of Connecticut (book review). Technology Quarterly, Vol. XX., pp. 375-378, 1907.

HERVEY W. SHIMER.-The Broad Features of the Geologic History of North America in Diagram. Technology Quarterly, Vol. XX., pp. 287

291, 1907.

HERVEY W. SHIMER.-An Almost Complete Specimen of Strenuella Strenua (Billings). American Journal Science, Vol. XXIII., pp. 199–201, p. 319, 1907.

NAVAL ARCHITECTURE.

C. H. PEABODY.-Thermodynamics of the Steam Engine, etc. (rewritten). New York, John Wiley & Sons, 1907.

C. H. PEABODY.-Tables of the Properties of Steam and Temperature Entropy Table (partly recomputed and partly new). New York, John Wiley & Sons, 1907.

WILLIAM HOVGAARD.-Article on the Speed of Battleships. Read before the International Congress of Naval Architects in Bordeaux, France.

Proceedings of the Society of Naval Architects and Marine Engineering, 1957.

W. S. LELAND and H. A. EVERETT.-Test on the Steamship "Governor Cobb." Read before the Society of Naval Architects and Marine Engineering. Proceedings of the Society of Naval Architects and Marine Engineering, 1907.

MATHEMATICS.

FREDERICK S. WOODS and FREDERICK H. BAILEY.-A Course in Mathematics, Vol. I. Boston, Ginn & Co., 1907.

GEORGE A. OSBORNE.-Differential and Integral Calculus. Revised edition. Boston, D. C. Heath & Co., 1907.

CLARENCE L. E. MOORE.-Circles Orthogonal to a Given Sphere. Annals of Mathematics, January, 1907.

ECONOMICS.

DEWEY, D. R.-National Problems. In the American Nation Series. Harper & Brothers, New York, 1907.

DEWEY, D. R.—Financial History of the United States. Third edition and revised. Longmans, Green & Co., New York, 1907.

DEWEY, D. R.-Review of Burton's "John Sherman." American Historical Review, July, 1907, p. 905.

Report of the Treasurer.

The Treasurer submits the annual statement of the financial affairs of the Institute for the year ending September 30, 1907.

It may not be uninteresting at this time to compare the financial condition of the Institute sixteen years ago with that of to-day. The following table shows in concise form some of the principal items in 1891 and in 1907:—

that the number of Fees from Student

Salaries over 139

From the above figures it will be seen students has increased over 50 per cent. and Scholarship funds, over 82 per cent. per cent., and total expenditure of all kinds more than 113 per cent. This increase in total expenses is not caused by any one class of expenditures, but is distributed throughout most of them. For instance, it will be noted that the amount for department supplies has more than doubled, and that the item "General Expenses" is nearly twice what it was.

In the matter of repairs, there was a large expenditure in the year 1906, and the cost this year may be considered abnormally low. In 1906 the amount for repairs was decidedly more than double that in 1891.

The increase in the total property of the Institute has been large, being nearly 190 per cent., but it must be borne in mind that of the total amount more than one half is in the form of real estate and scholarship funds, and another large portion