April 4, 1890. J 



CALENDAR OF SOCIETIES. 



Philosophical Society, Washington. 



March 29. — Marcus Baker, Obituary 

 Notice of Edward B. Lefavour; O. H. 

 Tittmann, Note on the Length of Kater's 

 Pendulum; William Eimbeck, A New 

 Method of determining Astronomical Dif- 

 ferences of Longitude; Herman Holerith, 

 Exhibition of a New Electrical Tabulating 

 Machine. 



Natural Science Association of Staten 

 Island. 



March 13. — Mr. L. P. Gratacap exhib- 

 ited specimens of quartz geodes and limon- 

 ite concretions, from the iron-mines near 

 Four Corners ; Mr. Arthur Hollick showed 

 specimens of Anemoiw hepatica, L., the 

 common liverwort, collected in full bloom 

 at Prince's Bay on Feb. 16. The following 

 objects were shown: a cannon-ball, pre- 

 sumably a I'elic of Revolutionary times, 

 presented by Mr. S. N. Havens; a stone 

 axe and arrow-head, presented by Mr. M. 

 T. Merrill, which had been di-edged from 

 the bottom of the Kills near Linoleumville. 

 The articles were incrusted with barnacles 

 and biyozoons. 



Exchanges. 



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

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

 York.l 



A large nurab'er of plants from Maine, Connecticut, 

 Indiana and Illinois for exchange. Southern and west- 

 ern e.xchanges preferred. Address, enclosing lists, L. N. 

 Johnson, 223 Chicago Ave., Evanston, 111. 



For Exchange— Fourteen volumes Encyclopedia Erit- 

 ^r.nica (Stoddard's ninth edition), bound in leather — part 

 in original wrappers, all as new — can arrange to furnish 

 volumes required 10 complete set, and six volumes 

 -' Am rican Naturalist " in numbers. Want small screw- 

 cutting foot lathe and testing galvanometer and rheostat. 

 For particulars address A. B. Campbell, McKean Co., 

 Bradford, }'a. 



To correspond with colleges, seminaries and other 

 schools where cabinels of fossils and minerals are being 

 collected. I have an extensive private collection of 

 fossils from every geological period, and minerals illus 

 trating the common and many of the- rare forms. This 

 collection is in duplicate, and the duplicates are for ex- 

 change or sale. Every thing is scientifically classified. 

 W. A. Bronnell, professor of geology, go5 University 

 Ave., Syracuse, N.Y. 



I have a number of duplicates of microscopic slides, 

 mostly botanical, which 1 would like 10 exchange for 

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

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

 New Wilmington, Pa. 



Corresp .ndence 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 10 secure aiiy 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, 

 Caofield, L.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, Frara- 

 ingham, Mass., 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 good 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 

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

 Iowa. 



A few duplicates of Murex rtidix^ M. ramosus^ M. 

 Arandaris, Cassis ru/a, Harpa veniricosa^ Oiiva tri- 

 -atuta, O. reticularis^ Chloi-ostoma /unebrate, Cyprtea 

 <:a.put serpcHtis, C. lynx, Lottia- giganiea, Aanola 

 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. 



SCIENCE. 



CATAKRH. 



Catarrhal Deafness— Hay Fever. 



Sufferers are not generally avirare that these 

 diseases are contagious, or that they are due to 

 the presence of living parasites in the lining 

 membrane of the no-e and eustachian tubes. 

 Microscopic research, however, has proved this 

 to be a fact, and the result of this discovery is 

 that a simple remedy has been formulated where- 

 by catarrh, catarrhal deafness and hay fever are 

 permanently cured in from one to three simple 

 applications made at home by the patient once 

 in two weeks. 



N.B. — This treatment is not a snuff or an 

 ointment ; both have been discarded by repu- 

 table physicians as injurious. A pamphlet ex- 

 plaining this new treatment is sent free on 

 receipt of stamp to pay postage, by A. H. Dix- 

 on & Son, 337 and 339 West King Street. 

 Toronto, Canada. — Christian Advocate. 



Sufferers from Catarrhal troubles should care- 

 fully read the above. 



J VST OUT. 



Speech Reading and Articnlation 

 Teaching. 



By A. MELVILLE BELL. 



Price, 35 Cents. 



Practical Instructions in the Art of Reading 

 Speech from the Mouth ; and in the Art of 

 Teaching Articulation to the Deaf. 



[This Work — -written at the suggestion of Miss 

 Sarah Fuller, Principal of the Horace Mann School 

 for the Deaf, Boston, Mass, — is, so far as known, the 

 first Treatise published on "Speech Reading.''] 



*^.* The above work may be obtained, by 

 order, through any bookseller, or post-free 

 on receipt of price, from 



N. D. C. HODGES, 

 47 Lafayette Place, New York. 



Wants. 



JUST PUBLISHED. 



POPULAR MANUAL OF VISIBLE SPEECH AND 

 VOCAL PHYSIOLOGY. 



For use in Colleges and Normal Schools. Price 50 cents. 

 Sent free by post by 



N. D. C. HODGES, 47 Lafayette Place, New York. 



THIS DIAL 



Consists of a strong card- 

 board, 5X by 4 inches, with 

 movable metal hands, and is 

 useful for mothers nf infunts 

 to record the hoar of last Dtirs- 

 ing, and thus attain regularity 

 iu feeding. Serviceable also 

 for teaching time to little 

 children, aua as a toy in vari- 

 ous plays. Mailed on receipt 

 of 10 cents, by 



(•BABYBOOI>,'9 

 5 Beelunan Street, Nevr York. 



RUPTURE 



cured in stipulated time. 



NO DELAY FROM AVORK. NO OPERATION. 



Call or send stamp for circular and reference of those 

 :ured. We have on hand over 300 styles of trusses, from 

 ?i up. and suspensories of all kinds. Orders filled by 

 mail or express to any part of the United States. 



C. A. M. BURNHAM, M.D.. 



138 Clinton Place, New York. 



Any person seeking a f>osition for •which he is quali- 

 fi.cd by his scientific at/ainnien's, or any person seeking 

 some one to fill a position o/_ this character^ be it that 

 0/ a teacher 0/ science^ chemisi^draughtsjnan^ or what 

 not. may have the ' Pliant' inserted 7inder this head 

 FREE or-- COST, if he satisfies the publisher 0/ the suit- 

 able character ofi his application. A ny Person seeking 

 in/ormation on any scieiitific question., the address 0/ 

 any scieittific man, or -who can in any ivay use this col- 

 umn for a purpose consonant with the nature ofi the 

 paper, is cordially invtedta do so. 



AN experienced. College Professor, with con3.ider- 

 able ability in advertising educational institu- 

 tions, now employed, is open to an engagement. 

 Has built up two schools by advertising. Now is 

 just the time to begin work for September opening. 

 ""WilUam." 348 East 20th St., New York. 



WANTED by a Cornell University graduate a po- 

 sition as Chemist in some Manufacturing 

 establishment. References given. T. B. 



A METALLURGICAL CHEMIST desires an engage- 

 ment with a steel works, iron works, or blast 

 furnace Has had nine yfears' eKj;)erience in all 

 branches of steel and iron work, and can furnish 

 highest references and testimonials from former 

 employers. Address CHEMIST, 4,4^0 Chestnut St., 

 Philadelphia, Pa. 



A WILLIAMS SENIOR who has had two and one- 

 balf years' work in cnemical laboratory, and 

 one year in a biological laboratory, desires position 

 as teacher of natural science and lesser mathe- 

 matics, desires a position as instructor in these 

 branches, or as assistant to some chemist. Refer- 

 ences as to ability and character. E. E. Towne, Box 

 74, Williamstown, Mass. 



A REGULARLY graduated physician in his a2d 

 year, who has been in active practice for eight 

 years, excepting the time he was interne in a hos- 



Eital and taking a post-graduate course, and who 

 as done considerable work both in literature and 

 science, more particularly connected with medicine, 

 being now engaged in editorial writing for one of the 

 first- class medical monthlies, wishes to learn of a 

 town, not particular as to the size or location, 

 where, in addition to practising his profession, he 

 may become connected with a school or other insti- 

 tution as teacher of elementary and advanced phys- 

 iology, chemistry, and hygiene, one or all; or would 

 accept position with an older physician who is en- 

 gaged in literaiy or scienific work, as an assistant, 

 either in his practice, or as amanuensis or secretary, 

 or in any capacity requiring knowledge of medicine 

 and cognate branches; or would accept a position as 

 librarian, having bad experience as acting librarian 

 while at college. Can furnish unexceptionable ref- 

 erences as to ability and. character, and, if the posi- 

 tion offers opportunities for advancement, will 

 accept for a time a nominal salary. Is married, but 

 has no family beside his wife. Address Dr. W., care 

 of Science. 



WANTED. A Harvard Senior who has 

 made a specialty of chemistry, and 

 has had some experience in teaching and in 

 analysis, would like to secure an appoint- 

 ment for the fall. Best of references given. 

 AddresSj J. , Harvard College, Cambridge, 



CHEMIST (30) wants situation at once; 

 Ph.D,. and for three years Demon- 

 strator of Chemistry, Leipzig University. 

 Practical experience in technical branch of 

 the subject. X., 13, Worcester Place, Ox- 

 ford. 



ATOtJNGr MAN aged nineteen, who is a 

 gi'aduate of the Exeter High School, 

 wants a situation with some Manufacturing 

 Chemist or iu Laboratory of some Analytical 

 or Private Chemist; must be chance where 

 he can have access to books iu evening. Is 

 willing to work ; has good knowledge of Gen- 

 eral Chemistry. Sam. L. Hills, South Lee, 

 N.H. 



A SUBSCRIBER of Science would be 

 grateful for any information on the 

 following points: 1. As to the kind of wax 

 used in the preparation of embryological and 

 anatomical models; 9. How it can be made 

 and manipulated : 3. References to any liter- 

 ature on the subject. Wm. Fatten, Grand 

 Forks, North Dakota. 



WANTED— Books upon American Arch- 

 aeology. My publication, "Fort 

 Ancient," in exchange. First-class stand- 

 ard works only. Warren K. Moorehead, 

 Smithsonian Institution, Washington, D. C. 



