SCIENCE. 



[Vol. XV. No. 363 



CALENDAR OF SOCIETIES. 



Anthropological Society, Washington. 



Jan. 7. — Capt. John G. Bourke, U.S.A., 

 Vesper Hours of the Stone Age ; Major J. 

 W. Powell, Remarks on the Archseology of 

 North America ; Dr. W. J. Hoffman, Re- 

 marks on Ojibwa Ball-Play ; Mr. Walter 

 Hough, Prometheus. 



Connecticut Academy of Arts and Sciences, 

 New Haven. 



Jan. 15. — D. C. Eaton, Some notes on 

 Lotus; Wm. H. Brewer, Further notes on 

 the Race-Horse. 



Appalachian Mountain Club, Boston. 



Jan. 8. — Mr. Warren Upham, A Recent 

 Visit to Lake Itasca ; Rev. E. F. Merriam, 

 A Short Account of his Ascent of Parlin 

 Pond Bald Mountain, Maine. 



Boston Society of Natural History. 



Jan. 15. — The discussion of the question, 

 " What were the Climatic Conditions of the 

 Glacial Period ? " The Section of Entomol- 

 ogy will meet on Jan. 22. 



Engineers' Club, St. Louis. 



Jan. 8. — The Executive Committee sub- 

 mitted the following programme of meetings 

 and papers for the year 1890. It has not 

 been possible to assign exact dates as pro- 

 posed by the members contributing, but the 

 arrangement submitted, it is thought, will be 

 found satisfactory : Jan. 8, Method for Defi- 

 nite Location of Gauge Line on Car Wheels, 

 B. F. Crow ; Deflection of Framed Struc- 

 tures, J. B. Johnson. Jan. 22, Fuel Gas, 

 William B. Potter. Feb. 5, Tests of Water 

 Works Engines, George W. Dudley ; Spiral 

 Springs, Nathan W. Perkins, Jr. Feb. 19, 

 The Pemberton Concentrator, Frank Nichol- 

 son ; The Substructure of the Cairo Bridge, 

 Edward H. Connor. March 5, Elevated 

 Railroads, George H. Pegram. March 19, 

 The Smoke Problem, William B. Potter. 

 April 2, A National Federation of Engineer- 

 ing Societies, J. B. Johnson. April 16, Rail- 

 way Inclines, Isaac A. Smith; The Repro- 

 duction of Drawings, David C. Humphreys. 

 May 7, Compound Locomotives, Arthur T. 

 Woods ; Granitoid Curb and Gutter, Otto 

 Schmitz. May 21, River Pollution in the 

 United States, Charles C. Brown. June 4, 

 Report of Committee on Collection of Local 

 Data, S. B. Russell, Chairman. Sept. 17, 

 The Telescope : Its Optical Qualities and 

 Application to Measurements, O. L. Petitdi- 

 dier. Oct. i. History of a Few Railway 

 Culverts, Charles I. Brown. Oct. 15, Pump- 

 ing Machinery, James M. Sherman. Nov. 5, 

 The Graphical Representation of the Output 

 of the Steam Engine, F. E. Nipher. Nov. 

 19, Selection of Committee on Nomination 

 of Officers ; Stripping Coal, Lewis Stockett. 

 Dec. 3, Annual Meeting — Nominations of 

 officers for the year 1891 ; annual reports of 

 officers and committees. Dec. 17, An- 

 nouncement of result of election for officers ; 

 address of retiring president. Mr. B. F. 

 Crow then read a paper on " Method for 

 Definite Location of Gauge Line on Car 



Wheels." He discussed the matter princi 

 pally with reference to street railway prac- 

 tice, showing the lack of uniformity, and the 

 difficulty of determining definitely the gauge 

 of any street railway or pair of wheels. He 

 explained a simple method for settling the 

 matter, and illustrated it with blackboard 

 sketches. Mr. Crow exhibited a number of 

 patterns of various forms of street rail and 

 wheel. He recommended the proposed 

 method for general adoption. Messrs. J. 

 B. Johnson, Robert Moore and J. A. Seddon 

 took part in the discussion. Professor J. B. 

 Johnson then read a paper on " Deflection of 

 Framed Structures," to which he had added 

 a discussion of the distribution of stresses 

 over redundant members. The professor's 

 discussion was general in its application, and 

 presented a method for determining the 

 stresses in those forms of truss which had 

 been usually considered indeterminate, and 

 consequently to be avoided. The method of 

 using the formula was fully explained, and 

 illustrated by an example from a Pratt truss. 

 The discussion was participated in by Messrs. 

 Hubbard, Pegram, Seddon, Nipher, and 

 Moore. Mr. Pegram called attention to the 

 importance of this question, as it was usually 

 given far too little study by engineers. He 

 explained a simple method, which he had 

 used in determining the camber of a bridge. 

 He also called attention to the fact that the 

 load was increasing at the rate of one half of 

 one per cent per month. 



CATARRH. 



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N.B. — This treatment is not a snuff or an 

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C. A. M. BURNHAM, M.D,, 



138 Clinton Place, New York. 



Readers of Science 



Corresponding or visiting with Adver- 

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u> 



To CHEMISTS, 



MANUFACTURERS 



and ENGINEERS. 



CHEMICAL TECHNOLOGY; or, 



CHEMISTRY IN ITS APPLI- 

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 UFACTURES. Edited by 

 Charles Edward Groves, F.R.C., 

 and William Thorp, B.Sc. 



VOIi. I. NOW READY. 



FUEL AND ITS APPLICATIONS, 



By E J. Mills, D Sc, F.R.S., and 

 F. J. Rowan, C.E., assisted by 

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 of the Smithsonian Institute, Wash- 

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7 Plates and 607 other illustrations. 

 Royal octavo pages xx -\- 802. Half- 



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MAILED POSTPAID ON RECEIPT 



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N. D.C. Hodges, 47 Lafayette Place, 



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LI FE-LO R E: 



A MONTHLY MAGAZINE OF PQPOLAR BIOLOGY. 



The. Subject-Matter is LIFE—Life in all itsforms^ 

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Published by 



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