SCIENCE. 



[Vol. XVI 1. No. 426 



CALENDAR OF SOCIETIES. 

 Women's Anthropological Society of 



America, Washington. 

 March 28. — Mrs. Anita Newcomb MoGee, 

 History of a Communistic Sect. 



Philosophical Society, Washington. 



March 28. — H. Farquhar, Tlie Commercial 

 Growth and Import Duties of the United 

 States (illustrated by curves) ; "W. J. McGee, 

 The Mississippi "Bad Lands;" R. W. Sbu- 

 feldt, Indian Types of Beauty (with lantern 

 illustrations). 



Natural Science Association of Staten 



Island. 

 March 14. — Charles W. Leng, Notes on 

 Some Species of Donacia; Arthur Hollick, 

 Soapstone Rock from the Clove Road Out- 

 crop. 



Boston Society of Natural History. 

 AprU 1.— H. C. Ernst, The Germ-Theory 

 of Disease (illustrated by stereopticon and 

 exhibition of tube cultures). 



Royal Meteorological Society, London. 

 March 18.— G. J. Symons, F.R.S., History 

 of Rain-Gauges. It appears that Sir Chris- 

 topher Wren, in 1663, designed not only the 

 first rain-guage, but also the iirst recording- 

 gauge, although the instrument was not 

 constructed till 1670. The earliest known 

 records of rainfall were made at the follow- 

 ing places: Paris, 1668; Townley, Lancashire, 

 1677; Zm-ich, 1708; and Londonderry, 1711. 

 A. W. Clayden, M. A., showed, on the screen, 

 a number of interesting transparencies of 

 photographs of clouds, lightning-flashes, and 

 other meteorological phenomena. 



SPRING IMPORTATION 



OF 



PARIS COSTUMES AND WRAPS, 



Walking, Dinner & Evening Dress, 



Mantillas, Capes, Sacques, 



English Cape and Sliawl Ulsters, 



BOX COATS, WATEEPROOF SERGE WRAPS 



NEW YORK. 



BUSINESS OPPORTUNITY. 



A Manager is wanted for an electric 

 company. A person of experience will 

 learn of a good opportunity by apply- 

 ing to 



N. D. C. HODGES, 

 47 Lafayette Place, New York. 



Wants. 



A 7iy person seeking a position /or ivhich he is qiiali- 

 fiedby kis scientific atiainme7ifs^ or any person seeking 

 so7ne 07ie to fill a position of this character^ be it thai 

 of a teacher of science^ ckemisty draughtsman^ or what 

 not, 7nay have the ' Want' inserted under this head 

 FREE OF COST, if he Satisfies the ptibUsher of the suit- 

 able character of his application. A ny person seeking 

 information on any scientific question^ the address of 

 any scientific Titan, or who can in any ivay use this col- 

 uifzn for a purpose consonant with the nature of the 

 Paper, is cordially invited to do so. 



WANTED.— All of Vol. I. of Journal of Analytical 

 Chemistry, published at Easton, Penn. State 

 price and condition. Science Book Agency, 47 

 Lafayette Place, New York. 



WANTED— A position in a Summer School of 

 Gymnastics to teach any one or more of the 

 following named physical exercises, viz.: Fencing 

 (to ladies especially), Sparring, Club Swinging, 

 Wands, Chest Weights and Free Movements. Am 

 prepared to offer very favorable terms to any school 

 desiring such work. WILLIAM FINDLAY, Propri- 

 etor of Phila. Inst, of Phys, Cult., 1009 Arch Street, 

 Philadelphia, Pa. 



A COLLEGE GRADUATE— has had four years' 

 experience in analytical laboratory and in 

 works— desires position in chemical works, oil re- 

 finery, or paint works, or in any position where 

 a technical chemist is needed. Address " CHEM- 

 IST," care Science. 



A HARVARD M.A., especially interested in Nat- 

 ural History, would like to learn of some out- 

 door occupation for the summer. Remuneration a 

 secondary object. SUMMER, Science Office. 



A CHEMIST, taking P. G. work in the Scientific 

 Department of one of our best colleges, would 

 like to negotiate for some industrial position, where 

 his knowledge would be of avail. Can furnish best 

 of references. R. S. W., Box 69], Amherst, Mass. 



WANTED— A position to teach Electrical Engi- 

 neering by a student from leading English and 

 French and U. S. science schools, or would accept 

 position as Consulting Electrical Engineer, Electri- 

 cian, etc. Very highest testimonials London & 

 Hartford Publishing Co., N. Y. (.International Press 

 Department.) 



WANTED.— A young man in college would like a 

 position during the summer of 1891 in some 

 scientific work, particularly Orinthology, either as 

 an instructor or tutor, or in making collections or 

 accompanying some scientific expedition. Can give 

 good references. Address HUBERT L. CLARK, 

 Amherst, Mass. 



WANTED.— A young man who has been teaching 

 in a first-class High School desires a position 

 in a similar institution. Is competent to teach 

 Mathematics, Latin, Book-keeping, and the English 

 branches. Can give highest references Address H. 

 W. MARTHENS, 6208 Broad St., Pittsburgh. Pa. 



WANTED.— A situation in a scientific house by a 

 graduate of the scientific department of the 

 Jersey City High School as Geologist, Mineralogist 

 or as assistant teacher in Physics or assistant to a 

 chemist. Best of references. E. W. PERRY, 583 

 Third Street. Jersey City, N. J. 



WANTED.— By a medical student of three 

 courses, a position on some war or mercan- 

 tile vessel sailing between America and some for- 

 eign country, as Clerk, Assistant Physician or Drug- 

 gist, or any respectable occupation. Content with 

 a moderate remuneration. Highest commenda- 

 tions. W. L. S., Science Office. 



[Pre 



Add res 



York.l 



Will 



Exchanges. 

 ;of charge to all, if of satisfactory character. 



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



:hange a new Thomson reflecting astatic ^nX" 

 vaiiometer, about 6,000 ohms, made by Clark, Muir- 

 head & Co , London, and costing £30, with i-g, 1-99, 

 i-ggg, shunts, lampand Jscale, f<ir a Weston voltmeter 

 and ammeter, or arge Wheatstone bridge, dial pattern, 

 or a portable testing outfit. Address G. A., Science 

 Office, 47 Lafayette Place, New York. 



For exchange — Fossil leaves from the Laramie beds of 

 South Table Mountain, near Golden, Col., for other fos- 

 sils, historical relics, or minerals. Address John B. Gar- 

 vin, State School of Mines, Golden, Col. 



For Sale or Exchange — All forms and species of Cana- 

 dian birds, mammals, insects, reptiles, fish or other nat- 

 ural history specimens. First class specimens only sup- 

 plied. G. E. Atkinson, 639 Spadina Ave.. Toronto, Can. 



i would like to exchange first six vols. Roscoe and 

 Schorleminer's Chemistr>', and Vols. 11. and III. of " Ed- 

 ucation " for American Naturalist for i88g and i8go. or 

 works on Zoology. C. Dwight Marsh, Ripon College, 

 Ripon, Wis. 



I have a good supply of Eastern Coleoptera which I 

 wish to exchange for species not in my collection. Mei- 

 andryidae and Oedemeridae especially desired. Joe C. 

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



I wish to exchange Eastern Lepidoptera for those that 

 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 pro- 

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

 David R. Lewis, Saybrook, 111. 



I took Cold, 



I took Sick, 



y Rest, 



AND I AM VIGOROUS ENOUGH TO TAKE 

 ANYTHING I CAN LAY MY HANDS ON ; 



isettiiig fiit loo, FOR Scott's 

 Emulsion of Pure Cod Liver Oil 

 and Hvpophosphiiesof Limeand 



Soda NOT ONLY CURED MY IllClp- 



ieiit CoiBSJii8»5»tioBg but built 



ME UP, AND IS NOW PUTTING 



FLESI4 ©N ^Y BOSSES 



AT THE RATE OF A POUND A DAY. I 

 TAKE IT JUST AS EASILY AS I DO MILK." 

 SUCH TESTIMONY IS NOTHING NEW. 

 SCOTT'S EMULSION IS DOING WONDERS 



DAILY. Take no other. 



Protection from Lightning 



SPARE THE ROD AND SPOIL THE HOUSE I 



To dissipate the energy of a lightning dis- 

 charge, — to prevent its doing harm, — it is 

 necessary that something should be placed in 

 its path upon which its energy (capacity for 

 causing damage) may ba expended. The 

 Patent Lightning Dissipater is specially de- 

 signed to serve this purpose, and will be 

 sent prepaid, with full directions for its ap- 

 plication, to any part of the United States, not 

 previously taken by agents, on receipt of $7.00. 



Cori-espoudence solicited. 



AGENTS WANTED. 



N. D. C. HODGES, 



47 Lafayette Place, 



IMEW YORK. 



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. '26 John St.. New York. 



MIMCDAIC Cabinet Spbcimens. Collections. 

 IfllllbnnLO. For Blowpipe Analysis. 



Largest and finest stock in U. S. lOOpp. lUustratecJ 

 CatalORUP. paper bound, 15c ; cloth bound, 25c. 

 GEO. L. ENGLISH & CO, Mineralogists, 

 Removed to 733 & 735 Broadway, New York. 



