SCrKNCH 



[Vol. XV. No. 367 



CALENDAR OF SOCIETIES. 



Anthropological Society, Washington. 



Feb. 4. — Washington Matthews, Gentes 

 of the Navajos; Joliii G. Bourke, Gentes of 

 the Apaches. 



Biological Society, Washington. 



Feb. 8 — Frank Baker, An Undescribed 

 Muscle from the Jnfraclavicular Region of 

 Man; C. D. Walcott, A New Genus and 

 Species of Ostracod Crustacean from the 

 Lower Cambrian; Cooper Cui'tice, The 

 Moultings of the Cattle Tick; Lester F. 

 Ward, The Flowers that bloom in the" Win- 

 ter-Time. 



American Academy of Arts and Sciences, 

 Boston. 



Feb. 12. — Hem-y W. Williams, On Re- 

 construction of Languages. 



Engineers' Club, St. Louis. 



Feb. 5. — Mr. George W. Dudley read a 

 paper on ' 'Tests of Water-Works Engines. ' ' 

 He explained the meaning and origin of 

 the term "duty." He explained in detail 

 the precautions necessary to be taken in 

 making duty tests, in order that the 

 results might be of value. He submitted 

 reports in detail of two tests of compound 

 condensing duplex direct -acting pumping- 

 engines, — one of 3,000,000 gallons capacity 

 per twenty-four hours, giving a duty of 

 about 62,. 500, 000 foot-pounds per hundred 

 pounds of coal; the other of 5,000,000 

 gallons capacity, giving a duty of about 

 75,000,000. In the discussion, Mr. Bryan 

 called attention to a simple rule for com- 

 paring the efficiency of pumping-engines 

 with ordinary steam-engines, the evapora- 

 tion in pounds of water per horse-power 

 per hour being equivalent to the constant 

 1,980, divided by the duty expressed in 

 millions of foot-pounds, based upon ten to 

 one evaporation. He called attention to 

 remarkable results that were being guar- 

 anteed by makers of compound and triple- 

 expansion condensing-engines now being 

 built for electic-light purposes. 



Professor Johnson stated, that, if due 

 ' allowance were made for engine friction, 

 he thought the results would not be so 

 unfavorable to pumping-engines as shown 

 by Mr. Bryan. Professor Gale stated that 

 pumping-engines were subject to certain 

 losses, due to friction, for which they 

 were given no credit. This being allowed 

 for, the efficiency would be increased. He 

 also showed that the cost of high-duty 

 engines was an important item, as the 

 increased interest and depreciation accounts 

 might overbalance the saving. He also 

 showed that pumping-engines were usually 

 put in of greater capacity than required, 

 so that they were operated under a disad- 

 vantage. Mr. Holman called attention to 

 the relative importance of duty as com- 

 pared with other items of expense in 

 pumping water. In St. Louis the coal bill 

 was less than half of the total cost, the 

 items of labor and repairs being of almost 

 equal importance. He also expressed great 

 doubt as to the reliability of the tests of 



the old Cornish pumping-engines, which 

 were usually held up as standards. 



The secretary then read for Mr. J. H. 

 Kinealy a paper entitled "Some Mathe- 

 matics on Ventilation."' The author 

 tested the commonly accepted rules of 

 practice by mathematical deduction, with 

 the result of showing the practice to be 

 well founded. In the discussion Professor 

 Gale stated that the intention of the author 

 was to investigate what diflference, if any, 

 must be made in the provision for ventila- 

 tion between a room occupied only tempo- 

 rarily and the same room occupied con- 

 tinuously. 



Exchanges 



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

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

 York.l 



Correspr 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 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 ot n 



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

 Canfield, 1,321 Broadway, New York. 



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

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

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

 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. 



1 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 

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



I wish to purchase Vol. 7 of the American Chemical 

 fournai^ either bound or unbound. State price. Ad- 

 dress, Wm. L, Dudley, Vanderbilt University, Nashville, 

 Tenn 



A few duplicates of Murex radix^ M. rajfiosus^ M. 

 brandarts^ Cassis rufa^ Harpa ventricosa^ Oliva iri- 

 ainla^ O. reticularis^ Chlorosto/na /iinebrale^ Cyprcea 

 caput serpentis^ C, lynx, Lottia ziganiea, Acniola 

 patina, Ckaina 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 mineials and fossils. — ■ L. L. Lewis, Copenhagen, 

 New York. 



Droysen's A Ig^meiner Historicher Hand-atlas (Leip- 

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

 International Scientific Series preferred. — Tames H. 

 Stoller, Schenectady, N.Y. 



Astronomical works and reports wanted in exchange or 

 to buy. Reports of observations on the planet Neotune 

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

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



1 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 Archaeolo,5y. I will ex- 

 chanjje 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. Bamett, Box 735, Stratford, Canada' 



I have Anodoita opahna (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 T 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. AVillard, Albion Academy, Albion, Wis. 



Will exchange "Princeton Review" for 1883, Hugh 

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

 back numbeisof " The Auk," "American Naturalist," 

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

 Keck, Chardon, Ohio. 



Shells and curiosities for marine shells, curiosities or 

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

 Davenport, Iowa. 



CATABKH. 



Catarrhal Deafness— Hay Fever. 



; TREATMENT. 



Sufferers are not generally aware that these 

 diseases are contagious, orlhat ihey are due to 

 ihe 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. 



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