October i8, 1889.] 



SCIENCE. 



C. & C. ELECTRIC MOTOR COMPANY. 



Electric Motors 



FOR 



Arc and Incandescent 

 Circuits, Most Eco- 

 nomical Motor on 

 the Market. 

 Regulation Perfect. 



Motors Designed for all 

 Power Purposes. 



OFFICE and 3IANUFACTORY: 



402 and 404 Greenwich Street, New 

 York Citv. 



New England Office, 19 Pearl St., Boston 



Philadelphia Office, 301 Arch St. 



Western Office, 139-141 Adams Street 

 Chicago. 



Southern Office, 25 Carondelet Street, 

 New Orleans. 



Wanis. 



Arty person seeking: a position /or iiihich lie is quali- 

 fiedby his scientific ailaiumen' ~, or any person seeking 

 some one to fill a position of ti,u character^ be it that 

 0/ a teacher of science^ chemist^ drajigktsinan, or what 

 not, 7nay have the ' IVant' inserted itnder this head 

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

 able character of his application. A ny person seeking 

 information oti any scientific question, the address of 

 any scientific man, or who can in any way use this col- 

 umn for a purpose consonant with the nature of the 

 paper, is cordially invited to do so. 



COLLEGE ALUMNI AND PHYSI- 

 CIANS. — The American Academy of 

 Medicine is endeavoring to make as complete a 

 list as possible of the Alumni of Literary Col- 

 leges, in the United States and Canada, who 

 have received the degree of M.D. All recipi- 

 ents of both degrees, literary and medical, are 

 requested to forward their names at once to Dr. 

 R. J. Dunglison, Secretary, S14 N. i6th Street, 

 Philadelphia, Pa. 



WANTED. — A teacher of science in an 

 Endowed Male College in Ky. Sal- 

 ary $1200.00. Address " M. H." care o Sci- 

 ence i,"} Lafayette Place, N.Y. 



WANTED. — Information concerning the 

 handling of air from Caves, for Cool- 

 ing and ventilating rooms. Address " JL H." 

 care of Science 47 Lafayette Place, N.Y. 



PHYSIOLOGY AND HYGIENE. — A 

 Fellow of the Mass. Med. Society, Mem- 

 ber of the Suffolk District Medical Society, and 

 former Assistant Editor of The Annals of 

 Gynaecology, desires a position as instructor in 

 Physiology and Hygiene. Address " N, ' 47 

 Lafayette Place, N.Y. City. 



WANTED a young man with some knowl- 

 edge of mineralogy to assist in our Min- 

 eral Department. A. E. FOOTE, 1223 Bel- 

 mont Av., Philada., Pa. 



MECHANICIAN.— An optician and maker 

 of instruments of precision of experience 

 would be glad of a position where his skill 

 would be valued in connection with some higher 

 educational institution. Address G. J., care of 

 Science, 47 Lafayette Place, New York. 



LIGHTNING. — Concise descriptions of 

 the effects of lightning discharges are de- 

 sired. State whether the object struck was pro- 

 vided with a lightning rod, the character ot the 

 rod, and the way in which it was set up. Be- 

 ginning at the top, describe briefly the effects. 

 State whether there was any smoke or dust 

 raised, and whether there was any odor. Any 

 reports of recent and of especially interesting 

 discharges will be published in Science. — Sci- 

 ence, 47 Lafayette Place, New York. 



WANTED. — By a large manufacturing 

 .house, an intelligent, energetic young 

 man about twenty years of age, to make working 

 drawings of electrical instruments from free-hand 

 sketches and verbal assistance. Must be able to 

 execute tinted drawings and tracings as well, and 

 have a fair knowledge of general physics and prin- 

 ciples of electrical measuring instruments. One 

 who has had some practice in brass and machine 

 work preferred, as also one who will remain and 

 learn the business. Specimens of work required. 

 Address, stating salary expected, experience and 

 references, E. G. W., Scienxe Office, N.Y. City. 



Old and Rare Books. 



Catalogue No. 29 nearly ready. Will contain 

 many scarce works pertaining to Natural His- 

 tory, Americana, out of print books, as a whole, 

 interesting. 



A. S. CLARK, 

 34 Park Row, New York City. 



)ACK NUMBERS and complete sets of leading Mag- 

 ) azines. Rates low. AM. MAG. EXCHANGE, 

 Schoharie, N.Y. 



Schools. 



Connecticut, New Haven, 



MRS. CADY'S SCHOOL FOR YOUNG LADIES. 

 Prepares for Smith and Wellesley, and admits to 

 Vassar by Certificate. Circulars. Early application 

 necessary. 



M 



Michigan. Houghton. 

 ICHIGAN MINING SCHOOL. — For Catalogues 

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



A TEMPORARY BINDER 



for Science is now ready, and will be mailed 

 postpaid on receipt of price. 



Half Morocco - 75 cents. 



5 binder is strong, durable and 

 t, has gilt side-title, and allows 

 aening of the pages perfectly 

 \X. Any number can be taken out 

 : replaced without disturbing the 

 :hers. and the papers are not muti- 

 ted for subsequentpermanent bind 

 £; Filed in this binder, Science is 

 ua>s convenient for reference. 



N. D, C. HODGES, 



47 Lafayette Place, N. Y, 



, 6>7 PARK PLACE, NEW YORK^ 



Agassiz Association. 



Does your Chapter want a good collection or 

 library ? 



Sometimes there are not enough funds in sight 

 to make the purchase. If so, satisfactory ar- 

 rangements can be made by paying part with 

 order and balance in small monthly payments. 



Where a collection already exists we will con- 

 tract to fill it out to any desired extent and 

 keep the cost within the resources of the 

 chapter. 



To parties who cannot see our specimens here 

 we will send boxes of samples upon approval. 

 We issue no catalogues. 



A. A. mineral collection. 



64 large beautiful specimens, ready mounted, in 

 handsome walnut cabinet. Each specimen re- 

 presents one of the 64 sub-divisions in Dana's 

 Tables for the Determination of Minerals. 

 With each collection we send copy of Dana's 

 Manual and complete set of determination ap- 

 paratus with blow-pipe, acids, etc., etc. Every- 

 thing first class. Price complete, .$40.00 or 

 $20 down, and balance $5 per month. Cheaper 

 collection can be supplied if wanted. A. A. 

 chapters, scientific societies and clubs, colleges, 

 schools, and private individuals, desiring rare 

 specimens, or books, or collection of the same, 

 please write to 



W. H. WINKLEY, Clearfield, Iowa. 



PATENT WRENCH 

 AND SCREW DRIVER COMBINED.: 



Turns Kuts. Gas Burners 



.Made ot Best PoUshed Steel. -— -. 



CHASLE3 v. Elt, p. O. Box 1945, New York City. 



Established iS 



H. A. DREW, 



Commercial Printer, 



37 Clinton Place, near Broadwav, 

 New York. 



Wedding Orders, Souvenirs. Invitations, Or- 

 ders of Dance, etc., etc., done in the latest and 

 most elaborate styles, at reasonable prices. 



All Favors promptly attended to. 



CHANCE FOR ALL 



To Enjoy a Cup of Perfect 

 Tea A TRIAL ORDER 'f W 



pounds of Fine Tea. either Oolong. Ja- 

 pan, Imperial, Gunpowder, Young Hy- 

 son, 5Iixed Knplish Breakfast or Sun 

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 of Tea you want. Greatest inducement 

 ever offered to g'et orders for our cele- 

 brnted Tens, CofTees and Banlnsr Powder. For full particu.- 



