l - |

Walnts.A:nyperson seekinga ositiox for iwhich he iS quatai-Xid hisscientific attaismwexo.s, or anyjOesox, seekixg

some oxe to fiU a oiosittox of ls is character, be it tkaaofa teacher ofscioxce ckemi'st. draughtsman, or whatxot,may kave the I Waxt' ixseried' *xrder hisheadFRIRI OF COST, i. Ise sd{0ties ghe,publiskir of the suit-abMe characterofhisq,oicatiox. Axv,ivo s¢cinformation on anysciestific xestiox, the address ofasy sciextific max, or- who can ix ansy tvay use thiscolumn for a fiur"ose consorwaxt uii- she nature ofthcefi,er, is cordialZy ispvifd to dGo so.

ltANTED.-We wault any aud ell11 t«e foHowing,VV provlding WQec*utt4de therbooks and maga-zines or bus them che&O for oaab: Aaademy, Lon-don, vol. I to 28, 36, Jan. aad Feb., '89; Age of Steel,vol. I to 66; AmericaLn Autiquarian, VOL' i, 2; Ameri-can Architect, vol. X to 0, 9; Americ"au Art R:eview,vol. 3; American Field, rol. I to 21; American GFeol-ogist, vol. I to 6; American lKaohi*t, vol. I to 4-Art Amateur, vol. I to 7, O ct., '4, Art Iiiterchange,vol. I to 9; Art UJniou, vol. I to 4, Jsa., '44 July '45;Bibliotbeca Sacra volt I to 46 Gode s Iady s Book;vol. I to 20; Now lNlUder,-vol. 11 ocXt SreI aud I, Series 8 vI. to 14- U; znae(novel). Raymer'"1fOl-d Book' t,'4 th voS., Mlinneapolis, linn.

I II~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~III

CALENDAR OF SOCIETIES.

Chemical Society, Washington.May 12.-E. E. Ewvell, The Carbohydrates

,of the Coffee-Berry; G. L S3pencer, An Im-proved Extractioyn Flask and an apparatus-for Rapid Drying over Sulphuric Acid; K.P. McElroy and W. D. Bigelow, Behavior-of Chromates in Acetone Solutions. Ad-journrment was until November.,

Biological Society, Washington.June II.-C. Hart Merriam, The Southern

.Fur Seal (Axctocephalus) at GEuadalupeIsland; Frederick V. Coville, Uses of Plants:among the Panamint Indiana; J. M. Hol-.,^zinger, On Amarantus crassipes Schlecten--dal; G. Hart Merriam, The Death Valley.Expedition.

Societas Entomologica.'-International Entomological Societyr, Zu-

nich-Hottingen, Switzerland.Annual fee, ten francs.

The Journal o?f the Society appears twice a-month, and consists entirely of origiual ar-ticles on entomology, with a department for.advertisements. All members may use this.department free of cost for advertisementsrelating to entomology.The Society coiisists of about 450 members

in all coantries of the world.The new volume began April l, 1892. The

-numbers already issued will be sent to new:members.For information address Mr. FRITZ RUBL,

President of the Societas Entomologica,.Zurich-Hottingen, Switzerland.

SCIE;NCE.348 LVOjL. XIX. No 489logues the impotant articles in the leading daily and weekly pa-pers and the monthly magazines of the United S3tates and Canada,including Science. Its value to readers, writers, and students, issufficiently indicated by its title, and, altbough stfll in its firstvolume, its success as evidenced by the current issue is a surpriseto no one acquainted with its plan and purpose.- A State Academy of Science was established in Ohio last

December by a fewv of the workers in various departments, andbeld its first fleld or summner mneeting at Akron on the 3d and 4thof June. Arrangements were made for its reception by theAkron Scientific Club, and these were carried out to the evidentsatisfaction of the members attending. T:heir number was, how-ever, diminished by a lieavy downpour of rain during the pre-cedinog night though on the -two days of the meeting the weatherwas fine. A small steamer was engaged for the day, and bothhosts and guests enjoyed to-ether ample opportunities for studyand collection, in all departments, on the banks and in tbe watersof several of the morainic lakes so numero-us in the vicinity ofAkron. In the evening a reception was beld at Buchtel College,whenl short addresses of wvelcome were made by the mayor, thepresident of the college and the president of the club, and wveresuitably -replied to by several of tlle visiting members. A shortbusiness session and a microscopic exhibition by the students com-pleted the programnme. On Saturday the members went by anearly train to the Gorge of the Cuyahoga, where they spent the

LETTVERS TO THE EDITOR.

0** Correspondents are requested to be as brief as possible. ThIe wtorer' a nameis in all cases required as proof ofgood faith.

77&e editor will be gald to pufblish any queries consonant twit.h the characterof the journal.

How to Protect Invetntions in Foreign Countries.IN my article on protecting inventions in fore'ign count'ries, the

mnatter quoted below should be amended, as indicated, by addingthe clause in italics.

It" The term, 17 years, of a United States patent is not shortened'ibv an application filed, within 7 months of the United States ap--piication, in Belgium, France,\*Great Britain, Guatemala, Italy,Netherland6, Norway, Portugal,i'Servia, Spain, Sweden, Switzer-land, and Tunis, or within 6 months, iu Brazil or San Domingo,"if the respective dates of the foreign patents are the same or later.tan that of the United States paternt.

The error occurred through no fault of yours; but you wouldgreatly oblige me by entering the correctionl.

EDWA-RD P. THO10ON.:New York, June 9.

THEz current issue of The Weekly Bulletin of Newspaper andPeriodical Literature, published at 5 Somerset St., Boston, istwice its -usual size, contaiming a classified inldex of 1300 articles-from recent numbers of the periodical press. Tbe Bulletin cata-

Exchanges.[Freeofcharge to all, if ofsatisfactorycharacter.

Address N. D. C. Hodges, 874 Broadway, New York.1

Taxidermist going out of business has quantity oflinely-mounted specimens of North American birds,mammals and reptiles sud -skiaa of birds for sale,includiug a full local collection of bird skcins, show-ing some great variationIs of species; also quantityof skulls with horns of deer and mountain sheep,and mounted heads Of same. Will give good ex-change for Hawk Eye camera writh outflt. Applyqjuick-ly.to J. R. Thurston, 2ff5 Yonge St.,'Toronto,Canada.

For exchange.-A fine thirteen-keyed flute in leatbercovered case, for- a phlotograph camera suitable for mak-ing lantern slides. Flute cost $27, and is nearly new.U. (). COX, Mankato, Minn.

Finished specimens of all colors of Vermont marble forfine fossils or crystals. Will be given only for valuablespecimens because of the cost of polishing. GEO. W.PERRY, State Geologist, Rutland, Vt.

\lANTE .-BY a young me6n, 0 Swasrthmore Col-VW lege junior, a noition as prinelpal of a publichigh schoo in ous ofili Gulf State*, or'*8 instractorin botany, physiolog, and geolog{ytain academyor normal school1. 'Address B., care'ot'Librarian,Swarthmore College,_Penn.

51 ANTED.-A teacher of Geology who is familiarVV with the fossils' of the H^lutto'n Group, asinstructor of Geology during July nlext at the Natu-ral Science Camp on Cainandaigusw lakre. Apply toALBERT L. ARRY, Directnr, 229 Averilt Ave.,Rochester, N. Y.:

lXANTED.-To act as correspondeut for one orv twro daily or weekly papers. Hlave worked onpaper for about twwo years Would likre a pOsitiOIl oueditorial staff of humorous p>per. Address GIEO.C. MASON, 14 lPlm St., Hartford, Conn.

For exchangze.-Three copies of " American StatePapers Bearing on Sunday Legislation," I89Ij Ss.5o,~newrand unused, for "iThe Sabbatli," by Harmon Ktngbrz84o; "The Sabbath," by A. A. Phelps, ,82' Ristryof the Institution of they Sabbath Day, Its Uses, and'Abuses," by W. L. lFisher, xt8g; " Humorous Phases ofthe Lawr, ' by Irving Brcowne- or other works amountingto value of books exchanged, on the question of zovern-mental legislation in reference to religion, personalTiberty,etc. If preferred, I will sell "American State Papers,"8and buy-other book-, on the subiect. WILLIAMf AD-DISON BLAKELY, Chicago, Mt.For Sale or Exchange for books a complete pnvate

chemical laboratory outfit. Includes large Becker bal-ance (2Oog. to i-ionig.),. platinum dishes- and crucibles,agate motors, glass-blowing apparatus, etc. For sale inpart orwhole. Also complete file of SiUimax'* _7eunal,x862-z88S (62-7-I bound); Smithsonian Reports, 1854-1883;U. S. Coast Survey, x8s5-z86g. Full particulars to en-quirers. F. GARDINE1, JR., Pomfret, Conn.,

TRANSLATOR wanted to read G}erman ar¢hitec-Ttural works at sight (no writing). One familiarwith technical terms desired. Address "A.," Box149, Near York Post Offlce.

iANTED.-A position in a manlufacturing, estab-VY lisbment by g4 manufacturing Chemist; of in-ventive ability. Address MI. W. B , care of Science,874 Broadway, W, Y.

WlANTED.-Boolks on Anatomy and Hyspnotism.Vw4 Will pay cash or give similar books in ex-change. Also want medical battery and photo out-filt. DR. ANDERSON, 182 State street, CbLi¢ago, Ill.

llANTED.-A college graduate with some normalW training, to teach the sciences', at $1.800 pe'ryear, in a southern aollege. A Baptist or a Method-ist Rreferred. M{ust also be a flrst-claas Latinscholar. A. H. Beals, Box K, Milledgeville, G#a.DDRESS WANTED.-Will some OmE please sendthe address of the Secretary of the American

Philological Society. Also that of HIerbert Spencer."ADDISON," Room 84, 164 Madison St., Chicago, Ill.

land-" Samuels"' Our Northern and Eastern Birds^'t aHlthie keports on the Birds of the Pacific R. R. Survrey

orsnE ) ) i E ] T ~~Ct bound In 2 vols., morocco, and a complete set of theSCENJ CL BBN RAJTE)S,l I~ Reports of the Arkasas Geological Survey Please iveditions and dates in corresponding. R. ELLSW&rl!

1 0 %DIS a o u N T.CALL, High School, Des Moines,, Iowa.To exchange Wright's 'i Ice Age in~North America"We will allow the above discount to any- and,Le Conte s "Elements of Geologyr" (Copynth 82

:subscriber to Science who will send, us an for "Darwihiism ," by A. R-Wallace, "Origin of Recies;"order for periodicals exceeding $10, countinlg Place in Natutre," Huxley, "MentaI Evolutio'n in Ani-each at its full price. mals," by Ro&anes, "'Pre-Adamites." by Winchell. Noboolcs wanted except latest editions, andl books in good

N. D. .HODES, 84 Broaway, . Y. condition. c. s. Brown, Jr., Vanderbilt University,

Wanted, in exchange for the following works, anystandard works on Surgery and on Diseases of Children:Wilson's " American Ornithology," Isvos Coues' "Blirdsof the Northwest " and " Birds of the Colaorado Valley,.t

vols.; Minot's "` Land and Game Birds of New Eno-

To exchange;Experiment Station bulletins andre) ortsforbilletins and reports not in my:fle. Iwill sentd list of what I have for .exchange. P. H.ROLFS, Lake City, Florida.

SCIENCE.day in a specially rich field for study in geology and botany, andwhere entomology was not lacking in' opportunity. Those who

were compelled to return took the afternoon trains, and a fewwho could renmain assembled and took tea at the home of thepresident, where they spent the evening. The meeting broke up

with the coniviction that the first summer gathering of the youing

Academy had been a pleasant and successful occasion.

-In a paper read before the Washington Chemical Society,May 12, the carbohydrates of the coffee-berry were discussed byErwin E Ewell. Our knowledge of the carbohydrates has beenmaterially extended during very recent years, in consequence ofwhich investigation in this line has been greatly stimulated. Max-well has demonstrated the presence of an insoluble, galactose-yield-ing carbohydrate; Reiss has reported an insoluble carbohydratethat yieldis mannose by hydroysis with dilute sulphuric acid. Thewater-soluble carbohydrates have received less attention; indefinitestatements concerning sugar, gum, and dextrin make up the ex-

349

isting literature of the subject. By experiments made in thelaboratory of the United States Department of Agriculture, cane-

sugar, accompanied by small percentages of a substance resemblingdextrin and some reducing sugar, has been shown to make up thewater-soluble carbohydrate material of coffee. The cane-sugar

was obtained in pure and well-defined crystals. A gum was pre-

pared from the portion insoluble in water. The latter has beenshown to be a galactose and pentose-yielding substance, and is nowbeing studied farther. At the same meeting, K. P. McElroy andW. D. Bigelow described a new method for the qualitative sepa-ration of calcium and strontium, based on the solubility of calciumchromate in dilute acetone. The chlorides of these metals are dis-solved in 50 per cent acetone, and a solution of potassium chromatein 50 per cent acetone added. After standing teii minutes no

strontium can be detected in the filtrate, and the precipitate ispractically free from calcium salts. These investigations will becontinued with the hope that the separation may prove quantita-tive.

Horsfoir's Aid Plbosphato.A wonderful remedy, of the

highest value in mental andtiervous exhaustion.Overworked men and women

the nervous, weak and debilitat-ed, will find in the Acid Phos-phate a most agreeable, grate-ful and harmless stimulant, giv-ing renewed strength and vigorto the entire system.

Dr. Edwin F. Vose, Portland, Me., says:"I have used it in my own case when suffer-ing from nervous exhaustion, with gratifyingresults. I have prescribed it for many ofthe various forms of nervous debility, and ithas never failed to do good."|

Descriptive pamphlet free.

Rumford Chemical Works, Providence, R. 1.

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Cut ready for setting. Having pur-GE OPAur LO a chased a large lot at theMexican lo-cakty, we are offering them at about one-fiWh jewelers'prices; 0c., $1, I.50, $2, $3. This is a rare opportlnity tosecure a fine gem very cheap. 100 pp. Mineral Catalogue15c.. in c1oth 25c., Suppleme,it 2c. GEO. L. ENGLISH & C0.,Mineralogists, 733 and 735 Broadway. New York City.

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FOSSIL RESINS.This book is the result of an attempt to

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By CLARENCE LOWN and HENRY BOOTH12°. $1.

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JUNE 17, i892.]

efUST R:EADY.

THE LABRADOR C!OAST.A Jourita of two SumTme-r Cruises to that

regionl; with notes on its early discovery,on the -Eskimo, on its physical geography,geology and natural history, together witha bibliography of charts, works and articlesrelating to the civil and natural history ofthe Labrador Peninsula.

By ALPHEUS SPRING PACKARD, M.D., Ph.D8°,)513pp., $3.60.

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SCIENCE. L"VOL. XIX. NO- 499350

CQUERY,Can any reader of Science cite

a case of lightn'ing stroke inwhich the dissipation of a smallconductor (one-sixteenth of aninch in diameter, say,) has failedto protect between two horizon-tal planes passing through itsupper and lower ends respective-ly? Plenty of cases have beenfound which -show that when theconductor is dissipated the build-ing is not injured to the extentexplained (for many of these seevrolumes of Philosophical Trans-actions at the time when light-ning was attracting the attentionof the Royal. Society), but notan exception is yet known, al-though this query has been pub-lished far and wide among elec-tricians.

First inserted June I9. No responseto date.

N. D. C. HODGES.,874 BROADWAY, NEW YORXl

PUBLISHER'S ANNTOUNCEMENT.OUR PLANS. Some of the Contributors to Science Since Jan.

WITEIIN the past six months the use of Science by I, 1892.scieutiflc men and women as a medium for prompt Aaron, Eugene M., Philadelphia, Pa.publication and weekly discussion, has increased Allen, Harrison, Philadelphia, Pa.very materially, so that the pages are now well Baldwin, J. Mlark, Universlty oil Toronto, Canada..flled each weekr with original matter. As8 the num- Barnes, Charles Reid, MWadison, Wis.ber of those promising contributions is increasing Baur, G., Clark URniversity, Worcester, Mass.at the rate of three cr four each day, it cannot be Beal, W. J., Agricultural College, Mich.long beflore Science at its present dsie will be too Beals, A. H., Milledgeville, Ga.small for the amount of matter offered. We have Beauchamp, W. M., Baldwinsville, N.Y.under consideration therefore an enlargement of Boas~Franz, Clark UJniversity, Worcester, Mass.the paper by one-half, but must first learn the tem- Boetwich, Arthur B., Montclatr, N .Jper of our conatitu'ency as to an advance in price to Bradley, Mlilton, Springfleld, Mau.$5.00, which was the subscription price from the Brinton, D. G)., Philadelphia, Pa.start for four years, up to June 30, 1887. F?irther, to Chaudler, H., Buffalo, N.Y.carry out the proposed enlargement, we shall need Comstock, Theo. B., Tucson, Arizona.five hundred additional subscribers. If you are not Cragin, F. W., Colorado Springs. Col.already a subscriber, are you wilUng to aid In mak- Davsl, W. M., Harvard College, Cambridge, MWass.tug Science more worthy of American scientific work Dimmock, GEeorge, Canobie Lake, N.H.by becoming one ? Farrington, E. H., Agricultural Station, Cham-paign,It gOes without saying, that the demand for scien- Ill.tific literature is limited, wheon compared with that Ferree, Barr, Now York City.for literature wrhich is more to the public taste, so lelenier, Simon, Johns Hopkins University, Balti-that the receipts of moist of the Scientific Journals, more, MUd.in this country, do not pay quite for their printing Foshay, P. Max, Rochester, N.Y.and paper, to say nothiDg of the other items of ex- Gallaudjt, E. MY., Kiendall Glreen, Washington, D.C.pense. We say this merely to emphasize the facts Garman, S., Museum of Comp. Zool., Cambridge,that generous and prompt support must be ac.- Mass.corded this x*r.ove if it is to succeed. G3olden, Katherine B., Agricultural College, Lafay-

ette, Ind.Titles of Some Articles Published in Science since Hale, Edwin M., Chicago, Ill.

Jan. I, I892. Hale, GFeorge S., Boston, Mass.. ~~~~~~Hale,Horatio, Clinton, Ontario, Canada.

Aboriginal North American Tea. Hall, T. Proctor, Clark Universfty, Worcester, MamActiuism. Halsted, Byron D., Rutgers Colloge, New Bruns-Amenhotep, Kiing, the tomb of. wrick, N.J.Anthropology, Current Notes on. Haworth, Erasmus, Oskaloosa, Iora.Arsenical Poisoning from Domestic F3abrics. Hay, O. P., Irvigton, Ind.Anatomy, The Tea-ching of, to Advanced Medical Haynes,Henry W., BostonMas.Students. HazenI, H. A., WVeather Bureau, Wasington, D.C.

Astronomical Notes. Hlewitt, J. N. B., Bureau of Ethnology, W"hlngtoni,Botanical Laboratory, A. D.C.Britin, A Few Characteristics of the Avian. Hic}cs, L. E., Lincoln, Neb.Celts, The Question of the. Hill, E. J., Chicago, I1LCollection of objectgf Used in Worship. Hill, Geo. A., Naval Observatory, Washington, D.C.Deaf, E{ighor Education of, the. Hitchoock, Romlia, Washtugton, D.C.Diphtheria, Tox-Albumin. Hotchkim, Jed., Staunton, Va.Etymology of two Iroquoian Compound Stems. Ilowe, Jas. Lewi, Louisville, Ky.Bye-Habit. Hubbard, Glardiner G., Wasigtona, D.C.Fam1l Traits, Persistency of. James, Joseph F., Agricultural Dopt., W"hington,Fishiea, The Distribution of. D.C.Fossils, Notice of New Gigantlc. JohBuon, Roger B., Miami U;niversity, Oxford, O.Gromes, Homoptera InJurious to. KellermanI, Mrs. W. A.,,Columbus, O.0' Healing, Divlno." Kellloott, D. S., State Unliversity, Columbus, O.Hemiptenv us Mouth, Stuturo the., Mac]ookie, G., Princeton, N.J.

HypnotsmWonC the ower;Aimals.M{cCarthy, GDerald, Agtultural Station, Raleigh,HypnotIsM, Tr&Unas#i N.C.kai8npFonot NFoS lW~~acDonald, Artbur, Wachifgton, D.C.InAueus, Lates% Petaf OoneeraXg tle GArm1 of.. Marshall, D. T., Metuchen, N.J.

Itfant'sMmoiz ~~~~~Mason, O. T., Smltbaonlan Instltutlot^, Washington,laventor and lXl&^ufacturf .Ze AMerIOM AMW- D.C.atiou of Nichols, C. F., Boston, Mwa.IouraXemTof#cl* ~~~~~Nuttall, George IL F., Johns Hopkcins UJniversity,Jargon, The Chinook. Baltimore, Md.

A;Ugtnu, Ihe Now,L=4o orow. uOliver, J. B., Cornell UJnlverotty, Ithaca, N.Y.

Llghhin,ThNorAlkodf PototlaBuilding Osborn, Henry F., Columbia College, Nowr York-from. City.Liesajou's Curves, Simaple Apparstus for the Produc- Osborn, Herbert, Agricultural CoUlge, Ames, Iowra.'Om. of. Pmmel, L. H., Agricultural StattoD, Ames, Iowra.lMalze Plant, Observatiou outho Growt and Cheml- Pni}sburyJ. B., #3mlth College, Northampton, Maas.

Wcalomposttion of. RuXLIer,W.H. xLeifgof ,aMineral DMkoveries, Some Boot ntb t"o Scripturet, E. W., Clarkn n woD.C. ,MasWashington. Slade, D. D., Museum Comp. Zool, CambNridge,Musums, The Support ofv Mana'

PateFt OmceBulldX, The. Smith, John B., Rutgers College, Near Brunswick,Pocket Gopher, Attempted Extermination of. Serno,aY hldlhaPsty.oologlcal ILab,6=atry in the University of To- Stone, G.- H. Colorado Sprtngs CoLronto. Thurton, R. H., Corell University, Ithac, N.Y.

Psychological Training. The Need of. Todd, J. i%, Tabr Iowra.- ;R&Au-Mkinlg. True, Frederick V.Natlonal Museum, Washinv-RNyerk, Evolution df the Loup, inl Nebraska. _ton, D.C.Ekieatflc Alliaaa- e, Thei. *Tui-ier, C. H., Univerality of Cincinnati, ~Cincipuati,StIsr, Thbe Now, In Auriga O. tStors eof Storm-Waterson the Great Plains. Wsr H.DC arvard University, Ca;mbridge,,.ierNo 8abe Tothd, from Kiansas. -Wrd, Stauley M.' Scranton, Pa.. '~~~~~imbrgrftinyina.-. Warder, Robert h., Howard Unl-verslty, Washing-Tracheae of I¢tse trcueof.,. ton, D.C.

Veiu-Foripatlon Vauable Experiments la. Welch, Wm. H., Jobna Hoepkins UJniversity, Bsltl-Will, a mcent AnlssOf. more. M.D.

Wind-torms an'Tes.West, Glerald M., Clark Univrersity, Worcester, MassWines, The Sophisticated French. L Williams, lBdwa HI., Lehigha Unlversity, BethleoZoology in the Public Bchoolo of WaS1jfgtOD, D. C. hem, Pa.