154 



SCIENCE. 



[Vol. XV. No. 369 



CALENDAR OF SOCIETIES. 

 Anthropological Society, Washington. 



Feb. 18. — D. S. Lamb, Olecranon Fora- 

 men; W. W. Rockhill, Tibet; Mark B. 

 Kerr, The Origin of Llao Nous, a Legend 

 of the Shasta. 



Engineers' Club, St. Louis. 



Feb. 19. — Professor Johnson read Jlr. 

 Edward H. Connor's paper on the "Sub- 

 structure of the Cairo Bridge. ' " The paper 

 was accompanied by drawings, showing the 

 spans, piers, and caissons ; also by numer- 

 ous tables, and the complete specifications 

 of the bridge. Tlie paper explained the 

 work of construction in detail, and the dif- 

 ficulties met with in various parts of the 

 work. The tables gave the results of 

 numerous tests on cements, showing the 

 effect of different proportions of salt, the 

 effect of freezing, the effect of fine gi-ind- 

 ing, etc. The results were given for both 

 Portland and Louisville cements. Under 

 general discussion, Mr. Willard Beahan 

 was called upon for some information re- 

 garding the outlook for engineers in South 

 America, he having recently returned from 

 that country. He stated that the prospects 

 for American engineers were excellent at 

 the present time. Railroads are few, but a 

 large number are in prospect. Municipal 

 engineering was just being taken up. The 

 prices secured and salaries paid were good. 

 Most of the engineers now in that country 

 are French, there being only a few from 

 America and England. 



Exchanges. 



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

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

 York.l 



I have a number of duplicates of microscopic slides, 

 mostly botanical, which 1 would like to exchange for 

 others not now in my collection. Send list of what you 

 have to exchange and get my list. S. R. Thompson, 

 New Wilmington, Pa. 



Correspondence and exchanges solicited with persons 

 interested in the study of American and Mexican an- 

 tiquities. L. W. Gunckel, 36 Elm St., New Haven, Conn 



I wish to exchange or purchase well-fixed or hardened 

 vertebrate embryos for sectioning. Desire specially rep- 

 tilian embryos, but will be glad to secure any material 

 that 1 do not possess. Thomas G. Lee. M.D., Histo- 

 logical Laboratory, Yale University, New Haven, Conn. 



Wanted— Books and journals, American or foreign, 

 relating to Photography — exchange or purchase. C. W, 

 Canfietd, 1.321 Broadway, New York. 



Wanted. — Marine univalves of the west coast, from U. 

 S. line southward, and from Pacific Islands, offered; ex- 

 change from a general collection. — F. C. Browne, Fram- 

 ingham, Mass. T Box 50. 



D. E. Willard, Curator of the Museum, Albion Acad- 

 emy, Albion. Wis., will answer all his correspondence as 

 soon as possible. Sickness and death in the family, with 

 many other matters, have prevented his answering as 

 promptly as he should have done. 



I will give 100 eood arrow heads for a fine pair of wild 

 cattle horns at least two feet long. If you have shorter 

 or other horns write me, and also how many arrow heads 

 you want for them. I will also exchange shells, minerals 

 and arrows. W. F. Lerch, 308 East 4th St., Davenport, 



A few duplicates of Murex radix, M. rajnosus, M. 

 brandarts. Cassis ru/a, Harpa ventricosa, Otiva tri- 

 at-ula, O. reticularis, Chlorostovia funebrale, Cyprtza 

 caput serpentis^ C. lynx, Lottia gigantea, Actnola 

 patina, Chama spinosa, and some thirty other species, 

 for exchange for shells not in our collection. List on ap- 

 plication. — Curator Museum, Polytechnic Society, Lou- 

 isville, Ky. 



Photographs and Stereoscopic views of Aborigines of 

 any country, and fine landscapes.etc.,wanted in exchange 

 for minerals and fossils. — L. L. Lewis, Copenhagen, 

 New York. 



Droysen's A Igzmeiner Historicker Hand-atlas (Leip- 

 zig, 1886.) for scientific books — those published in the 

 International Scientific Series preferred. —James H. 

 StoUer, Schenectady, N.V. 



Astronomical works and reports wanted in exchange or 

 to buy. Reports of observations on the planet Neptune 

 and its satellite specially desired. — Edmund J. Sheri- 

 dan, B.A., 295 Adelphi St., Brooklyn, N.Y. 



I would like to correspond with any person having 

 Tryon's "Structural and Systematic Conchology " to 

 dispose of. I wish also to obtain State or U.S. Reports 

 on Geology.^ Conchology, and Archseology. I will ex- 

 change classified specimens or pay cash. Also wanted a 

 copy of MacFarlane's " Geologists' Traveling Hand-Book 

 and Geological Railway Guide." — D. E. Willard, Cura- 

 tor of Museum, Albion Academy, Albion, Wis. 



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

 Eggs 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 Anodonta opalina (Weatherby), and many 

 other species of shells from the noted Koshkonong Lakt 

 and vicinity, also from Western New York, and fossil: 

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

 glad to exchange for .specimens of scientific value of an) 

 kind. 1 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. 



Shells and curiosities for marine shells, curiosities or 

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

 Davenport, Iowa. 



LIFE-LORE: 



A MONTHLY MAGAZINE OF POPULAR BIOLOGY. 



The Subject-Matter is LIFE—Life in all its forms, 

 plant and animal^ from the " lowest " to the *' high- 

 est^" recent and extinct. The engravings and letter- 

 press are beautifully produced. 



Published by 



;■. MAWER, at Essex Hall, Essex Stree 



Strand, London, "W.C. 



Post-free for twelve mouths for $1.25, prepaid. 



NOTICES OF the: PRESS.. 



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'* We predict a career for Life-Lore worthy of Its 

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"The first volume, which is before us, contains 

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"Whilst far eclipsing its one English rival in the 

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A TEMPORARY BINDER 



for Science is now ready, and will be mailed 

 postpaid on receipt of price. 



Half Morocco - 75 cents. 



This binder is strong, durable and 

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 UinyCr always convenient for reference. 



N. D. C. HODGES, 



47 Lafayette Place, New York. 



OATAKBH. 



Catarrhal Deafness— Hay Fever.. 



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Sufferers are not generally aware that these 

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Sufferers from Catarrhal troubles should care- 

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Readers of Science 



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