SCIENCE. 



[Vol. XVI. No. 398 



FALL STYLES. 

 DRESS FABRICS 



West of England Tweeds. 



SCOTCH CLAN PLAIDS 



and IRISH POPLINS. 



Scotch Skirtings. 

 CACHMERE d'ECOSSE AND CAMEL'S HAIR, 



for Street and Evening Wear. 

 PARIS EMBROIDERED ROBES, 



Kun's Veilings and Emliroldered Crepons, 



for Evening Wear. 



% 



"tctx^wair 



p\ 



c < 



■>\^ 



9t^ 6l, 



NEW YORK. 



>. 



THE 



iell Telepkiie 



COMPANY. 



95 MILK ST, BOSTON, MASS. 



TLi.s Company owns tlie Letters 

 Patent granted to Alexander Gra- 

 bam Bell, March 7tli, 1876, No. 

 174,465, and January 30, 1877, 

 No. 1§6,787. 



The Transmission of Speech by 

 all known forms of ELEOTKIC 

 SPEAKING TELEPHONES in- 

 fringes the rig-bt secured to this 

 Company by the above patents, and 

 renders each individual uier of tel- 

 ephones, not furnished by it or its 

 licensee.*, responsible for such un- 

 lawful use, and all the conse- 

 quences thereof and liable to suit 

 therefor. 



HANDBOOK OF METEOROLOGICAL TABLES. 



By Asst. PeqI'. H. a. Hazen. 





California Blankets. 



We are now displaying a full range of our 

 exclusive brands of Fine California Blankets, 

 "Santa Clara," "Silverado," and " San Benito," 

 in the following sizes; 9-4, 10-4, 11-4, 12-4, 

 13-4, and 14-4. The prices range from $4.25 

 to $15 per pair. 



We invite an examination of these goods, to 

 convince our customers of the genuine values 

 offered. --""'"^ 



JAMES McCREERY& CO., 



Broadway and nth St., 

 New York. 



12/ pp. 8°. 



A collection of all the tables needed by a 

 working meteorologist. Several of these 

 ■?ff^*.^ jles have never been printed before. 



'' Professor Waldo says : "I heartily recom- 

 mend them to all workers in meteorology, 

 and do not see how any of our American 

 meteorologists can afford to be without a 

 copy." 



Professor Symons of London says : ' ' They 

 are unquestionably valuable helps, which 

 must be kept handy, and replaced when 

 worn out." 



DESIRABLE OFFICES to rent, singly or in suites, 

 in the BIBLE HOUSE, Astor Place, with steam 

 heat, electric lights, elevators, and all modern con- 

 veniences. Rents moderate. 



WILLIAM FOULKE, Treasurer, 

 Room 6, 



Bible House. 



BOOKS : HoTF to Exebange tbem for 

 others. Send a postal to the Science exchange 

 column (insertion free), stating briefly what you 

 want to exchange. Science, 47 Lafayette Place, 

 New York. 



N, 



JPrice, postpaid, $1, 



D. C. HODGES, 

 47 Lafayette Place, New York. 



WORCESTER POLYTECHNIC INSTI- 



TIITP Courses in Civil, Mechanical and Electri- 

 I U I C cal Engineering and Chemistry. A new 

 Course in Physical and Political Science proposed. 

 For catalogue address H. T. Fuller, Ph.D., Worces- 

 ter, Massachusetts. 



Michigan, Houghton. 



Michigan Mining School. 



A State School of Surveying, Mining, Electri- 

 cal and Mechanical Engineering, Physics, Chemis- 

 try, Assaying, Ore Dressing, Mineralogy, Petro- 

 graphy, Geology, Drafting, Machine Design, etc 

 Tuition free. For catalogues and information ad 

 dress 



M. E. Wadsworth, A.m., Ph.D., Director. 



Readers of Science 



Corresponding with or visiting Ad'vertisert 

 will confer a great favor by mentioning thepapes. 



THE MUTUAL LIFE 



INSURANCE COMPANY 

 OF N EW YORK. 



RICHARD A. McCURDY, President. 



THE LARGEST, BEST AND MOST POPULAR 



LIFE INSURANCE COMPANY IN 



THE WORLD. 



Assets January 1st, 1890, $136,401,328.02 

 New Bflsiness Id 1889, - 151,602,483.37 

 Annual Income, - - - 31,119,019.62 



Purely Muhial. 



No Stockholders. 



NO OTHER COMPANY HAS SHOWN 

 RESULTS SO PROFITABLE AND GRAT- 

 IFYING TO POLICY-HOLDERS. 



ITS POLICIES ARE THE MOST 



LIBERAL AND DESIRABLE 



ISSUED. 



It has Paid Policy-holders since Organization 

 $287,681,948.20. 



The Twenty Year Distribution Policy 



issued by The Mutual Life Insurance 



Company is a Model Contract. 



The Company's Policie are now held by 

 182,310 Members. 



ESTERBROOK'S 

 STEEL PENS. 



Oi SUPERIOR AND STANDARD QUALITY. 

 Leading Nos.: 048, 14, 130, 135, 239, 333 



For Sale by all Stationers. 



THE ESTERBROOK STEEL PEN CO., 



Works : Oamden, N. J. ^6 John St.. New Vork. 



IF JFL £3 S3 . 



OCR 100 PP. CATALOGUE OF MIIVERAIiS. 



Illustrated with 57 cuts, and containing (a) Scien- 

 tific Papers and Notes, 41 pp.; Cb) A Classified List 

 of All Mineral Species, giving chemical composition 

 and crystallographic form, 31 pp.; (c) An Alpha- 

 betical Index of some 3,000 mineralogical names. 

 Paper-bound copies free to those mentioning this 

 journal; handsome cloth-bound copies, 25 cents, 

 postpaid. GEO. L. ENGLISH & CO., Dealers in Min- 

 erals, 1513 Chestnut street, Philadelphia ; 739 & 741 

 Broadway, New York. 



