SCIENCE. 



[Vol. XVII. No. 427 



CALENDAE OF SOCIETIES. 



Biological Society, Washington. 



April 4.— T. H. Bean, Kennerley's Sal- 

 mon; Theobald Smith, Remarks on Recent 

 Bacteriological Progress in the Prevention 

 and Cure of Disease ; V. A. Moore, Produc- 

 tion of Immunity in Guinea-Pigs with 

 Sterilized Cultures of Hog-Cholera Bacillus; 

 Theodore Gill, On the Classification of the 

 Apodal Fishes; E. M. Hasbrouok, A Mono- 

 graph of the Carolina Parrakeet. 



Appalachian Mountain Club, Boston. 



April 8. — Warren Upham, A Classifica- 

 tion of Mountain Ranges according to their 

 Structure, Origin, and Age; C. G. Van 

 Brunt, A Trip to Mount Adams and the 

 Club-Hut in a Mid- Winter Storm (illustrated 

 by the stereopticon). 



A special meeting will be held Thursday, 

 April 30, at 7.45 pm., at which Mr. Emil 

 Huber of Ziirich, Switzerland, a member of 

 the Swiss Alpine Club, will give an illus- 

 trated lecture on the Alpine Features of the 

 Canadian Selkirks, and Professor C. E. Fay 

 will give a brief account of the mountain 

 regions visited by him last summer, and 

 especially of a day's climbing in the Sel- 

 kirks. 



■pOR SALE.— 



AN DER SEE. Eeisebriefe aus dem Moore 

 und von der Nordsee. Von Dr. Ernst 

 Doges. (1884.) 178 p. 13°. 25c. 



DIE KOLONIALREICHE UND KO- 

 LONISATIONSOBJEKTE DER GE- 

 GENWART. Kolonialpolitische und 

 kolonialgeographische Skizzen von Dr. 

 Emil Deckert. Leipzig, 1885. 340 p. 12°. 

 25c. 



REISEERINNERUNGEN AUS AL- 

 GERIEN UND TUNIS. Von Dr. W. 

 Kobelt. Frankfurt am Main, 1885. Illus- 

 trated. 480 p. 8°. 75c. 



TRANSMISSION ELECTRIQUE DU 

 TRAVAIL MECANIQUE. Determina- 

 tion des Elements de la Transmission. Par 

 A. Hillairet. Paris, 1884. Illustrated. 

 79 p. 8°. 35c. 



IE BEZIEHUNGEN ZWISCHEN 

 GEISTESSTORUNG UND VER- 

 B R E C H E N . Nach Beobachtungen in der 

 [rrenanstalt Dalldorf von Dr. W. Sander 

 und Dr. A. Eichter. Berlin, 1886. 404 p. 

 8°. 75c 



BLATTER FUR GEFANGNISS- 

 KUNDE. Organ des Vereins der deuts- 

 chen Strafanstaltsbeamten. Redigirt von 

 Gustav Ekert. Neunze.hnter Band, 1 u 3 

 Heft. Heidelberg, 1884. 151 p. 8". 35c. 



KRITISCHE UND EXPERIMEN- 

 TELLE BEITRAGE ZUR LEHRE 

 VON DER FUTTERUNGSTUBER- 

 CULOSE. Von Dr. F. Wesener. Frei- 

 burg, 1885. 98 p. 8°. 35c. 



ZUR KUNSTLICHEN ERNAHRUNG 

 DER SAUGLINGE IN DEN DREI 

 ERSTEN LEBENSMONATEN. Ex- 

 perimentell plinische Untersuchung von 

 Dr. H. Schoppe. Tiibingen, 1884. 83 p. 

 8°. 35c. 



GEDENKTAGE DER PSYCHIATRIE 

 ALLER LANDER. Von Dr. Heinrich 

 Laehr. Berlin, 1885. 65 p. 8°. 50c. 



SCIENCE BOOK AGENCY 



47 Lafayette Place, New Yorli, 



Wants. 



A 7iy person seeking a position for- ivhick he is quali- 

 fied by his scientijic attain7nen^Sy or any person seeking 

 some one to fill a position of this character^ be it that 

 of a teacher of science^ chemists draughtsman, or what 

 not, may have the ' Want'' inserted under this head 

 FREE OF COST, if he satisfies the Publisher of the suit- 

 able character of his application. Any person seeking 

 information on any scientific gjtestion, the address of 

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

 li mn 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 EDgi- 

 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 Id 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, 582 

 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. 



Exchanges. 



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

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

 York.] 



Will exchange a new Thomson reflecting astatic gal- 

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

 head & Co , London, and costing £.1,0, with 1-9, i-gg. 

 i-ggg, shunts, lampand fscale, for a Weston voltmeter 

 and ammeter, or arge Wheatstone bridge, dial pattern, 

 or a portable testing outfit. Address G. A., Scie7zce 

 Office, 47 Lafayette Place, New York. 



Frr 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. 



1 would like to exchange first six vols. Roscoe and 

 Schorleminer's Chemistry, and Vols. II. and III. of '' Ed- 

 ucation ■" for American Naturalist for i88g and iSgo, 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. Mel- 

 andryidae and Oedemendae 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 foand in the South. 

 Jos. F. Crandali; Honesdale. Wayne Co., Pa. 



To exchange, 1890 Seeger and Guernsey Cyclopedia, 

 containine 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. 



"You must so to Bermuda. If 

 you do not 1 will not be responsi- 

 ble for the consequences." '* But, 

 doctor, S can affttrd neather tbe | 

 time nor the money." " Well, if ' 

 that is impossible, try ' 



MULSION 



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COD LIVER OIL. 



I sflmetlmes call it Bermuda Bot- 

 tled, and many cases of 



COf^SUB^PTiOlM, 

 Bronchitis, Cough 



or Severe Cold 



I liaTB CIISEE18 witsj it; and tlie 

 advantage is tliat the most sensl- f 

 live stosaiach can take it. Anotlier c 

 tiling wliicia commends it is tlie I 

 stiiBiulatlns? i>r«>perties of tbe Hy- { 

 pojiiiinsiihites wliicli it contains. I 

 You will find it for sale at your i 

 ESrugsist's but see vou get the f 

 j original SCOTT'.S EMULSION." | 



Protection from Lightning 



SPARE THE ROD AKD SPOIL THE HOUSE ! 



To dissipate the energy of a lig-htuing 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 be 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. 



Correspondence solicited. 



AGENTS WANTED. 



N. D. C. HODGES, 



47 Lafayette Place, 



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