SCIENCE. 



Vol. XIV. No. ;.56 



DAFT ELECTRIC LIGHT COMPANY. 



Power Stations. .,- ' ~^ Electric Railways. 



Stationary Motors 

 '2 to 100 H.P. 



Car Motors 15 to 

 250 H.P. 



Executive Office, 1 15 Broadway, N.Y. 



FACTORY, JERSEY CITY, N. J. 



Please Mention "Science." 



Exchanges. 



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

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

 York.l 



Morris's ''British Butterflies," Morris's ''Nests and 

 Esgs of British Birds." Bree's *' Birds of Europe" (all 

 colored plates), and other natural history, in exchange 

 for Shakesperiana ; either books, pamphlets, engravings, 

 or cuttings. — J. D. Barnett, Box 735, Stratford, Canada. 



I have Afiodonta opalina (Weatherby), and many 

 other species of shells from the noted Koshkonong Lake 

 and vicinity, also from Western New York, and fossils 

 from the Marcellus shale of New York, which I would be 

 glad to exchange for specimens of scientific value of any 

 kind. I would also like to correspond with persons inter- 

 ested in the collection, sale, or exchange of Indian relics.— 

 D. E. Willard, Albion Academy, Albion, Wis. 



Will exchange '^ Princetun Review" for 1883, Hugh 

 Miller's works on geology and other scientific works, for 

 back numbers of " The Auk," "American Naturahst," 

 or other scientific periodicals or books. Write. — J. M. 

 Keck, Chardon, Ohio. 



" I wish to 



uthe 



for those found 



Volga, Brooking! 



Shell; 



other local 

 3., Dako 

 for 



optera with parties in the 



I will send western species 



— P. C. Truman, 



shells, 

 rals address W. F. Lerch, No. 308 East Fourth St., 

 Davenport, Iowa. 



A collection of fifty unclassified shells for the best offer 

 in bird skins ; also skins of California birds for those of 

 birds of other localities. Address Th. E. Slevin, 2413 

 Sacramento St., San tirancisco, Cal. 



I have forty varieties of birds' eggs, side blown, first 

 class, in sets, with full data, which I will exchange for 

 books, scientific journals, shells, and curios. Write me, 

 stating what you have to offer. — Dr. W. S. Strode, 

 Bernadotte, Fulton County, 111. 



I want to correspond and exchange with a collector of 

 beetles in Texas or Florida. — Wm. D. JRichardson, 

 P.O. Box 223, Fredericksburg, Virginia. 



loo botanical specimens and analyses for exchange. 

 Send list of those desired and those which can be fur- 

 nished, and receive a similar list m return. Also cabinet 

 specimens and curiosities for the same. Scientific corre- 

 suondence solicited. — E. E. Bogue, Orwell, Ashta. 

 County, O. 



I will sell to chapters or individual members of the 

 Agassiz Association, 25 fine specimens of fossil plants 

 from the Dakota group (cretaceous), correctly named, for 

 $2.50. Send post-ofhce order to Charles H. Sternberg 

 (author " Young Fossil-Hunters "), 1033 Kentucky 

 Street, Lawrence. Kan. 



Any one who has a botanical box in good condition wil 

 please write. I will offer about 30 specimens in ex- 

 change. —C. B. Haskell, Box 826, Kennebunk, Me. 



Lead, zinc, mundic, and calcite. — Lulu Hay, secre- 

 tary Chapter 350, Carthage, Mo. 



Drawings from nature — animals, birds, insects, and 

 plants — to exchange for insects for cabinet; or I will 

 send them in sets of ten each for ten cents in stamps. 

 My drawings in botany are in detail, showing plant, 

 leaves, flowers, seed, stamens, pistils, etc. — Alda M. 

 Sharp, Gladbrook, lo. 



A few first-class mounted birds, for first-class birds' 

 eggs of any kind in sets. — J. P. Babbitt, secretary 

 Chapter 755, 10 Hodges Avenue, Taunton, Mass. 



California onyx, for minerals'and coins not in my col- 

 lection.— W. C. Thompson, 6r2 East i4rst Street, New 

 York, N.Y. 



One mounted single achromatic photographic lens for 

 making 4X5 pictures, in excellent condition ; also one 

 *• new model " double dry-plate holder (4" X 5"), for fine 

 geological or mineral ogical specimens, properly classi- 

 fied. — Ci:harle3 E. Fnck, 1019 West Lehigh Avenue, 

 Philadelphia, Penn. 



The undersigned wishes to make arrangements for the 

 exchange of Lepidoptera of eastern Pennsylvania for 

 those from other localities. All my specimens are named 

 and in good condition. — Charles S. Westcott, 613 North 

 17th Street, Philadelphia, Penn. 



CALENDAR OF SOCIETIES. 



Anthropological Society, Washington. 



Nov. 19. — J. Owen Dorsey, Some Omaha 

 Religious Practices ; W. H. Holmes, Ancient 

 Chipped Stone Workshops on Piney Branch, 

 D.C. 



Connecticut Academy of Arts and Sciences, 

 New Haven. 

 Nov. 20. — Professor Brewer, The Progress 

 of the Topographical Survey of Connecticut ; 

 Professor Verrill, A Remarkable Illusion 

 Apropos of Haunted Houses. 



yo'a fEo aiot I will not !>e responsi- 

 iijie fOB* tfiBC ciBnseQueiiees." " But, 

 doctor, I caE2 afford nestliser the j 

 tiane nor the money." " Well, U 



that Es lEBapossitole, try 



TT'S 



I ss?na''**iBBe*> eal^ it Berziitida Bot- 

 tled, a.tiJ 'siany cases ■ f 



MroncJiltis, Coii^ 



OP Severe 



I Iiave -Ct'SiEB wit!! it; ana the | 

 a'SvsMitage is tEiat sSie most seiisi- j 

 tivo storasaela can £ah© it. Anotlier ; 

 thins wEiiicIi eii»3ui5eiis!s it i» tise { 

 stimaJatJE^ isropea'ties of tSie Hy- ! 

 popSBospIsites wisieis it contains. J 

 ¥©'j T«ill fiisd it foF sale at youp ! 

 S B5ro5;sJst'§ hut see you arct the i 

 J origiiial SCWST'S EMUi-SIOK." j 



AISTY OF 



Prof. L MELVILLE BELL'S WORKS 



— ON— 



Elocution — Visible Speech — 

 Principles of Speech — Faults 

 of Speech — Phonetics — Line 

 Writing — Worid - English, 

 etc., 



SUPPLIED BY 



N. D. C. HODGES, 



47 Lafayette Place, N.Y 



It-v-'. THE ■: - 

 PRMtAMERICAN 



iCHANCE FOR ALL 



To Enjoy a Cup of Perfect 

 Tea. A TRIAL ORDER of .''^ 

 pounds of Fine Tea. either Oolong. Ja- 

 pan, Imperial, Gunpowder. Younij Hy- 

 f-on, Jlixed. English Breakfast or Sun 

 Sun Chop, sent by mail on receipt of 

 $2.00. Be particular and state what kind 

 of Tia you want. Greatest inducement 

 e\ er offered to get orders for our cele- 

 brated Teas, Coffees and BalJincr Powder. For full particu- 

 lars addre.«s THE GE.EAT AMERICAJJJ" TEA CO. 

 P. O. Box 289. 31 and 33 Vesey SC, New York. 



IMPROVED OIL LIGHT 



MAGIC LANTERNS. 



Also Lime and Electiic Light Apparatus, and 



mechanical, plain, and fine colored views. 



J. B. COLT & CO., Manufacturers, 



No. 16 Beekman Street, New York. 



E &H.T ANTKONY&CO. 



591 Broadway, N.Y. 

 Manufacturers and Importers ot 

 PHOTOGRAPHIC INSTRUMENTS, 



Apparatus and Supplies of every 

 lescription. Sole proprietors of 

 :he Patent Detective, Fairy Nov- 

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 great variety, from Sg.oo u pwa rd. 

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 tablished in this line of bi 



A TEMPORARY BINDER 



for Science is now ready, and will be mailed 

 postpaid on receipt of price. 



Half Morocco - 75 cents. 

 ^irw uANp-rL-r*^^ This binder is strong, durable and 

 "' elegant, has gilt side-title, and allows 

 i the opening of the pages perfectly 

 flat. Any number can be taken out 

 or replaced without disturbing the 

 others, and the papers are not muti- 

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 1 ing. Filed in this binder. Science is 

 '- always convenient for reference. 



- N. D. C, HODGES, 



- ' M Lafayette Place, N, Y. 



A YOUNG MAN can have lucrative engage- 

 ment, not only a fixed salary, but accord- 

 ing to his work accomplished in travelling for 

 Science. A personal interview invited. 

 N. D. C. HODGES, 



47 Lafayette Place, New York. 



