Sftxtntitlt ^mxxtm.

Inside Page, each insertion - - - 75 cents a line*

Back Page, each insertion --- 81.00 a line.

Engravings may head advertisements at the same rateper line, by measurement, as the letter press. Advertisements must be received at publication office as earlyas Friday morning to appear in next issue.

Jarvis Gas-Consnmino; Furnace,

For Setting Steam Boilers. Will burn screenings withsmall mixture of soft coul without blower. Address

F. UPTON, General Agent, No. 23d Congress Street, ;

GT7ARD10Z.A'S

COFFEE & SUGAR MACHINERY

Coffee, Malt, Corn, Cocoa, and Grain-Uryluz machine. Coflee-Htililiig andHoilvhins Machine*, a oflee-Wa»hlng

Maculne. Helix Sugar Evaporator.

Mcfwrs. C. ADOLI'HE LOW Jfc CO., 4Street, Mensm. AltNOZ *- KSI'RI ELI,street.New ^ ork, are Mr. Guarrtiola's Agi'nV ^ -neywill give prompt attention to all orders ' oA> of theabove machines.

System ^ jcrinding !

Illustrated Catalc*4Tj? ./Ready.

Steel Castings,

From H to 10,000 lbs. weight, true to pattern. An Invaluable substitute for forglngs, or for malleable iron cast-

_. Send for circular andEL CASTING COMPANY,■' I, A DELPHI A. PA.

Harrison's

1 Catalo^^

new STAyDAJta a.w ciiisa mills.

Old Theories, Horizontal tfrinders, SlowFully Exploded. Fine Flour, High speed, andmical Milling Fully Established.

A NEW Copy For All.Millers and Editors please addresB

EUWAItU HAKIflSON.No. 133 Howard Ave. New Ilaven, Conn.

PIANOS

Retail prico $900 only $260. ParlorOrqam. prico $340 only $95. Paperfree. Einiol F. Bjatty, Wiahing'.oii, N. J.

facilities f^ZtofflfrS^ £ggR!Hii

FOR !>ALE.First-class engine, 16x30, iron bed plate, governor, etc.

Steam Shears and Punch (very powerful). Kenyon'sScrew Cutter (douhle). Blacksmiths' Tools at extra lowprices. Address 1404 Main street, Wheeling, \V. Va.

1HPORTAXT NOTICE.1 wish to negotiate with some responsible manufac

turer to make and sell un royalty my lately oatentedpump valve, an article entirely separate fromThousands of dozens can be sold everv year.D. F. DODGE, Lowville, N.Y.

TELEPHONES.

THE GOLD AND STOCK TELEGRAPH

COMPANY hns completed arrangements

with the AMERICAN SPEAKING TELE

PHONE COMPANY Tor xupplyiiig the pablic

of tliis and the neighboriag cities and of

all parts of the United States with Tele

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aud with Private Telegraph Lines oa which

to use them. Applications will be filled in

the order in which they arc received.

For all information apply to

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Sup't Gold and Stock Telegraph Co.,

Western Union Baildiug.

Hew York, December 18, 1877.

$3 PRINTING PRESS!** Prints cards , envelopes, etc., equal

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Merideu, Conn.

1/Unifif A new Medical Treatise. "Theft Pi U wl Pciexck of Life, or Self-Pres-iillW V khvation," abook for everybody.

Prico 91, sent by mail. Fiftyoriginal prescriptions, either oneof which Is worth ten times the

price of the book. Gold Medal awarded the author. TheBoston Herald says: "The Science of Life Is, beyondall comparison, the most extraordinary work on Physiologyever published." An IllustratedPamphlet sent free AddressDR. W. H. PARKER, No. 4Bulflnch Street, Boston, Mass.

Cut

THYSELF!

HEAL

THYSELF

Machinists' Tools.

New ant* Improved Patterns.Send for new illustrated catalogue.

Lathes, Planers. Drills, &c.

NEW HAVEN MANUFACTURING CO.,New Haven, Conn,

FOUNDRY AND MAOTINE SIIOP FORSale or Rent. We offer at a bargain, our old works,consisting of three substantial brick buildings sheds,ample water power and facilities for conducting an ironor wood working business. Coal, iron, hard and soft

Ind.

' wood working bustness. Coal, iron, hard anniber close at hand. Three railroads. AddressSOUTH BEND IKON WORKS, South Bend,

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In this line of bnsincss they have had oveb thirty

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All Right Fire Arms Co,, Lawrence, Mass.

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ENCYCLOPEDIA BRITANNIC!

Ninth Edition .--American Eeprint.

This great work Is beyond comparison superior In itselaborate and exhaustive character to all similar works.The contributors are the most distinguished and orig

inal thinkers and writers of the present and of thepast.This issue is the Ninth revision in a space of over one

hundred years Binoe Its inception, and this reprint, acopy In every particular of the British Edition now Incourse of publication, Is the best and cheapest workever offered to the American people.The articles are written in a most attractive style,

and the quantity of matter In each volume Is one-third greater per volume than in any other Cyclopediasold at the same rates.The work contains thousands of Engravings on Steel

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J. I A CO., Publishers,

H. II. KEY, Publisher,

Room No. s. 120 Broadwny, N. T.

CPATENT

OLD ROLLED

SHAFTING.

The fact that this shafting has 75 per cent, greaterstrength, a finer finish, and Is truer to gauge, than anyother) n use, renders It undoubtedly the most economicalWe are also the sole manufacturers of the CelebratedCollins' Pat.Coupling, and furnish Pulleys, Hangers,etc., of the most approved styles. Price list mailed onapplication to JONES & LAUGHLINB,

Try Street, 2d and 3d Avenues, Pittsburgh, Pa.190 S. Canal Strnet. Chicago. Til., and Mtlwaukie. Wis.

In store and for sale by

Gears, h*t free. Grant. 1IU Beverly St., Boston- | TELJ±J T-A-1^ ICl^E QQ

stroudsburg, v

EMERY WHEELS AND GRINDERS.

GEO. PLACE, 121 Chambers St.. ftew York Agent.

HARTFORD

STEAM BOILER

Insuection & Insurance-

COMPANY.

W. B. FRANKLIN, V. FTKl I. M. ALLEN, Pres't.

J. B. PIERCE, Sec'y.

Pyrometers,For showing; heat ofOvens, Hot Blast Pipes,

Holler Flues, Super-Heated Steam, Oil Stills, 4c.HENRY W. BuLKLEY, Sole Manufacturer.

119 Broadway, N. Y.

ROCK DRILLING MACHINES

AIR COMPRESSORS.

MANUFACTURED BY DURIE,ChRoC*Dr.UI C 0

SENu FOR PAMPHLET. FITCHBURG MASS,

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We make Burr Millstones, Portable Mills. Smut Machines, I "act its. Mill Picks, Water Wheels, Pulleys, andGearing, specially adapted to Flour Mills. Send forcatalogue.

J. T. NOTE & SON, nu llii lo, N. Y.

P.BLAISDELIi <& CO.,

Worcester, mass.,

Manufacturers of the Blalsdell Patent Upright Drills

and other first -class Machinists' Tools.

M

TPT?fte!PflT>T?e! At Reilm-ed Prices.lUltUOUUrjiia opera Glasses. Spectacles, Telescopes. ThiTinomt'tcrs. Send forIllustrated Catalogue. K. et J. HECK,

921 Chestnut Ht.. Philadelphia.

vi:mLEPFEL WATER

With recent improvements.

Prices Greatly Reduced.

7000 in successful operation.

TIME HEW PiKPHLIT FOB 1877,

Sent free to those interested

James Leffel Is Co.,

Springfield, O.

109 Liberty St., N. Y. City,

BOOARDTTS' PATENT UNIVERSAL ECCEN

TRIC MILLS-For grinding Bones, Ores, Sand, OldCruolblcs, Fire Clay, Guanos, Oil Cake, Feed, Corn,Corn and Cob, Tobacco, Snuff, Sugar, Salts, Roots.Sploes, Coffee, Cocoanut, Flaxseed, Asbestos, Mica,etc., and whatever cannot be ground by other mills.Also for Paints. Printers' Inks, Paste Itlacking, etc.JOHN W. THOMSON, successor to JAMBS BOGAR-DUS, corner of White and Elm Sts., New York.

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PERFECT

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Tho Koch Patent tie, for preserving newspapers,magazines, nnd pamphlets, has been recently Improvedand price reduced, subscribers to the Scientific American and Scikntific American Supplement can besupplied for the low price of $1.50 by mail, or $1.25 at theoffice of this paper Heavy board sides; inscription"SCIENTIFIC AMERICAN," in gilt. Neoessary forevery one who wishes to preserve the paper.Address

H. W.JO HNS1 PATENT.

^MATERIALS. v^

liquid Points—all shades, finest In the world.Fire Pi-oof Paint, for Wood work, Ac.Itoof Paine, for Tin Roofs, Iron Work, &c.Hoofing, with white Fire Proof Coating.

roofs.Uoot'Coatiug, for restoring and preserving olCements* for Retorts, Furnaces, Leaky Roofs,Sicnni Pipe and Boiler Coverings.Steam Packing, Aabcatoi* Boards* Fire Proof

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plied by any one. Send for Samples, Pamphlets, PriceLists, Ac

H.W. JOHNS MANUFACTURING COMPANY,

Alsofor

sale by

8T maiden Lmie, New York.

fPHILADEI.PHIA BRANCH,406 Arch St.DOWKIE, TRAINER & CO.. Ronton.

I 8. W. HEMPSTED 4 CO., Columbus, Ohio.* M. M. RUCK * CO., St. Louis.C. A. PARKER 4 CO.. New Orleans.THOMPSON 4 UPSON, San Francisco.

ALCOTT LATHES, for Broom, Rake and Hoe Han.

dies. S. C. HILLS, 78 Chambers St. N.Y.

YALE VERTICAL MILLIron Frame; French Burr; Self-olllng;Self-feeding; Adjustable-balanced; Long

Bearings . Cheapest .best arranged, t>estfinished, andlurquali-tyand <j—no s

FOR SALE.

8 Light 20 in. IVertical Mills, $111

each. 1 Heavy 20 to. Harrison Vertical Mill, fieo.i1 Kxtra Heavy 24 in. Harrison Vertical Mill, 1225.00.

YALE IRON WORKS, New Haven, Conn.

Established 1844.

JOSEPH C. TODD,(Formerly of Todd & Raffertv), Engineer and Machinist. Flax, Hemp, Jute. Rope, Oakum, and BaggingMachinery, steam Engines, Boilers, etc. Also Agent forthe celebrated and improved Rawson & Rlttinger Hoisting Engine, I will furnish specifications and estimates forall kinds of machinery, send for descriptive circularand price Address

J. C. TODD,

10 Barclay St., Mew York, or Paterson, N. J.

Small Tools of all kinds ; also GEAR WHEELS, partsof MODELS, and materials of all kinds. Castings ofSmall Lathes, Engines, Slide Rests, etc. Catalogues free.GOODNOW A WIGHTMAN. 23 Cornhlll, Boston, "

1872, 1874, 1876,

SCIENCE RECORD.

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Each yearly volume contains about 600 octavo pages,including a lurge number of *~They are bound in substantial and handsomeand will be mailed on receipt of 11.25 each. Ac

MUNN 4 CO., PCBLI8HKRS,

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DYKES' BEARD ELIXIR"..Juno i t, ami will d O I ton the ■moolttot '*«'.Mor* lh*>n "<>j..iin( mm *1i*k1t *«lr humMbD.Ttcua Ann num., fatting. u*< 1 from 1 la IPtek'(l. NolnjuxT. ):.■»;■■ OsM i*

B g\ SAFETY HOISTING

\# I Iw Machinery-

OTIS BROS. 4 CO., No .348 Broadway. New York.

Phillips' Vertical Burr Mills. adapted to all kinds

of grinding, with

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Tree Box. Our clean

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the most perfect Corn

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We use forged Cast

Steel Shafts, and guar

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C. C. PHILLIPS,

4048 GIrnrd Ave.,

West Phila.

FOR SALE €11RAF.The Machinery of a first-class Planing Mill am

and Blind Factory. Also Moulding Machine anding Lathe. Can all be seen running.

Address P. B. RATHBONE, Syracuse, N. Y.

MTJHTT & CO.,

Publishers SciBNTirn: American.

- IIEPARD'S CELEBRATED

$50 Strew Cuttin: Foot Lathe.

Foot and Power Lathes, Drill Presses,Scroll, Circular and Band Saws, sawAttachments. Chucks, Mandrills, TwistDrills, Dogs, Calipers, etc. Send forcatalogue of outfits for amateurs orartisans.

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