SCIENCE. 



[Vol. XVII. No. 417 



CALENDAR OF SOCIETIES. 



New York Academy of Sciences. 



Jan. 26.— J. A. Allen, The Geographical 

 Distribution of North American Mammals ; 

 Frank M. Chapman, The Origin of the Avi- 

 fauna of the Bahamas. 



St. Louis Club of Microscopists. 



Jan. 8, Election of OfiScers.— President, 

 J. C. Falk ; Tice-president, A. C. Speth ; 

 secretary, Frank Davis ; treasurer, Otto 

 Meyer; curator, William Ilhardt. 



Mr. Meyer exhibited slides of sachet pow- 

 ders and of Fucus versicolosus ; Dr. H. M. 

 Whelpley exhibited a slide of peacock silver 

 and several others of interest. 



Women's Anthropological Society of 

 America, Washington. 



Jan. 24, Election of Officers. — President, 

 Miss Alice C. Fletcher ; first vice-president, 

 Mrs. Anna Howes Barus ; second vice-presi- 

 dent, Mrs. Mary Parke Foster ; recording 

 secretary, Mrs. Susan A Mendenhall ; cor- 

 responding secretary and librarian, Mrs. 

 Mariana P. Seaman ; treasurer. Miss Flor- 

 ence P. SpoflEord : board of directors, Mrs. 

 Mary Olmstead Clarke, Mrs. Miranda Tul- 

 lock, Mrs. Jean M. Lander, Dr. Clara Bliss 

 Hinds, Miss Sarah A. Scull, Miss Lydia M. 

 Dame. 



LOW-FRICED BOOKS. 



Any of the following low-priced books will be 

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SCIENCE BOOK AGENCY, 



47 Lafayette Place, New York. 



ELECTRICITY. 



Alternate Current Machinery. By G. Kapp. 



18- J 



Chemistry of the Secondary Catteries of iMante 



and Faure. By J. H. Gladstone and A, Tribe. 

 Dynamic Electricity. By John Hopkinson, J. A. 



Schoolbred, and R. E. Day. 18^ 



Dynamo-Electric Machines. Recent Progress in. 



By Professor Sylvaniis P. Thompson. i%° 



Electric Bells. By F. C. Allsop. 12° 



Electric Lighting from Central Stations. By G. 



Forbes .'.■•■ 



Electricity. Supply of, by Local Authorities. 



By K. Hedges. 8° 



Electro-Magnetic Telegraph. A Hand-Book of 



the. By A. E. Lorins;. 18° 



Electro-Magnets. By Th. Du Moncel. Tr. by 



C.J.Wharton 



Electro-Telegraphy. By F. S. Beecher. 16°.. 

 Incandescent Electric LightiNg. A Practical 



Description of the Edison System. By L. H. 



Latimer, C. J. Field, and T. W. Howell. i8^. 

 Induction Coils : How Made and How Used. 



18=' 



Practical Dynamo-Building for Amateurs. By 



Frederick Walker. iS** 



Terrestrial Magnetism and the Magnetism of 



Iron Vessels. By Professor Fairman Rogers. 



SANITARY SCIENCE. 



AlR We Breathe, the, and Ventilation. By Pro- 

 fessor H. A. Mott. 16° 



Bad Drains, and How to Test them. By R. H. 

 Reeve?. 12° 



Dikty Dustbins and Sloppy Streets. By H. P. 

 Boulnois. 12° 



Disease and Putrescent Air. By T. Rowan. 8°.. 



Drainage of Towns. By J. Phillips. 8° 



Dwelling-Houses : Their Sanitarv Construction 

 and Arrangements. By Professor W. H. Cor- 

 field. 18^ 



Fashion in Deformity. By William Henry Flower. 



Food, ttie Composition. Digestibiiity, and Nu- 

 tritive Value of. By Professor Henry A. 

 Mott 



Health, The Laws of. By W. H. Corfield. 8°. . 



Health-Science, A Manual of. By Andrew Wil- 

 son, a'' 



Healthy Foundations for Houses. By Glenn 

 Brown. 18° 



Hints on taking a House. By H. P. Boulnois. 



iry Plumbing. By W. 



Wants. 



A ny person seeking a position /or 'which he is qjiali- 

 fled by his scientific attainments^ or any person seeking 

 some o7ie to fill a position ofi this character y be it that 

 ofi a teacher ofi science^ chemist^ draughtsonan^ or -what 

 not. may have the ' JVafif inserted under this head 

 free of cost, ifi he satisfies the publisher ofi the stiit- 

 able character ofi his application. Any person seeking 

 infiorjnation on any scie7itific question, the address oj 

 any scientific inan^ or who can in any zvay use this col- 

 ui,tn fior a p7irpose consonant with the nature ofi the 

 Paper, is cordially invited to do so. 



WANTED. — One first-class instrument-maker. 

 Apply by letter to T. C. MENDENHALL, Su- 

 perintendent U. S. Coast and Geodetic Survey, 

 Washington, D. C 



WANTED, — A Botanist and Entomologist to ac- 

 company a. camping party of boys during July 

 next. Address, stating experience and salary ex- 

 pected. ALBERT L. AREY, Free Academy, Roches- 

 ter, N. Y. 



WANTED. — A young man wishes a position in an 

 experimeDt station, botanical department pre- 

 ferred. References and evidence of competency on 

 application. Address E. E. BOGUE. Agr. Experi- 

 ment Station, Columbus, O. 



WANTED— Employment or partial employment 

 as naturalist collector for all Ornithological, 

 Entomological or Zoological specimens. First class 

 Canadian references supplied. Would be willing to 

 work in Canada or any part of America as desired. 

 Salary or commission. G. E. ATKINSON, 639 Spa- 

 dina Ave., Toronto, Can. 



WANTED.— A situation in a scientific house by a 

 graduate of the scientific department of tbe 

 Jersey City High School as Geologist, Mineralogist 

 or as assistant teacher in Physics or assistant to a 

 chemist. Best of references. E. W. PERRY, 582 

 Third Street, Jersey City, N. J. 



A UNIVERSITY GRADUATE IN SCIENCE, at 

 present a junior student in medicine at the Uni- 

 versity of Michigan, desires a position as teacher or 

 laboratory assistant. Special preparation in Zool- 

 ogy, Histology, Physiology and Human Anatomy. 

 Will also teach, if desired, Physics, Chemistry, Bot 

 any. Entomology, Embryology, Bacteriology and 

 Sanitary Science. References and full particulars 

 on application. H. B., 20 East Jefferson St., Ann 

 Arbor, Mich. 



WANTED. — A young man wishes a position as in- 

 structor in the sciences in some school or 

 college. Chemistry a specialty. Would like to hear 

 of some position with a private or manufacturing 

 chemist, in which his knowledge of chemistry would 

 help him. Address E. E. TOWNE, B.A., 272 Worth- 

 ington St., Springfield, Mass. 



WANTED.— There being a considerable annual 

 income for the purchase of books for the Mu- 

 seum Reference Library of Iowa College, it is de- 

 sirable to have at hand any and all circulars, speci- 

 men sheets, catalogues, etc., of all works on Natural 

 History in general, both foreign and domestic. 

 Circulars of museum supplies, apparatus, etc., etc.. 

 desired also. State terms. Address ERWIN H. 

 BARBOUR, Box 1333, GrinneU, Iowa. 



WANTED.— A situation as Analytical Chemist is 

 desired by the assistant of the late noted 

 scientist. Dr. Cook, duriog his 15 years survey of the 

 State of New Jersey. Highest testimonials fur 

 nished. Address Prof. EDWIN H. BOGARDUS, 

 New Brunswick, P, O. Box 224, care Prof. P. C. 

 Van Dyck. 



COULD some one inform me what the ingredients 

 and origin of asphalt as used for street-paving 

 and gathered at Trinidad are? Also how gathered 

 and shipped by natives, and mode of refining by the 

 Warren-bcharf Co. of New York and the Barber Co. 

 of Washington? G. KNIPER, 28 Gunn Block, Grand 

 Rapids, Mich. 



Exchanges. 



[Free of charge to all, if of satisfactory character. 

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



York.l 



Salec 



ural history specimei 



plied. G. E. Atkinsi 



1 would like to e: 



Schorleminer's Chem 



h I 



ige — All forms and species of Can 

 insects, reptiles, fish or other na 

 is. First class specimens only su 

 n, 639 Spadina Ave.. Toronto, t:a; 

 change first six vols. Roscoe ar 

 stry, and Vols. 11. and 111. of " E. 

 an Naluralist for 1889 and 1890, < 

 works on Zoology. C. Dwight Marsh, Ripon Colleg 

 Ripon, Wis. 



I have a good supply of Eastern Coleopte 

 wish to e.xchange for species noE in my collection. Mel- 

 andryidae and Oedemeridae especially desired. Joe C 

 Thompson, Rosebank P. O., Box 73, S. I. 



I wish to exchange Eastern Lepidcptera for those thai 

 I do not have, particularly those found in the South 

 Jos. F. Crandall, Honesdale, Wayne Co.. Pa. 



To exchange, 1890 Seeger and Guernsey Cyclopedia 

 containing a complete list of the manufactures and pre 

 ducts of the U. S., and address of first hands, cost $6 

 David R. Lewis, Saybrook, 111. 



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