SCIENCE. 



[Vol. XII. No. 3c 



^\^Ef(S 



lERWEAR 



Superior to Silk or Wool. 

 A Protection aeainst Cold?, Neu- 

 ralgia and Rheumatism. 



SOLD BY LEADING MERCHANTS. 



WARNER BROS., 359 Broadway, New York. 



A Useful and Handsome Present. 



Prices Reduced for the Holidays. 



Warraated 14 karat gold and to give perfect satis- 

 faction — is pronounced toy hundreds of pleased cus- 

 tomers to toe tlie best fountain pen in the market be- 

 cause it is always ready. Writes freely and never 

 gets out of order. 



Sent by mail prepaid for $1.50, $2.00 and $2.50 

 each, according to size selected. 



These are special prices for tlie holidays, and this 

 offer should toe availed of by all vpho write. 



JOHN S. HULIN, 



M'f g Stationer and Steam Printer. 



Wedding Invitations and Visiting 



Cards Engraved to Order, 



369 BROADWAY, N. Y. 



Ne 



nkli; 



Street. 



The Largest, Handsomest, and Most Complete 

 Account-Book Manufactory and Printing Estab- 

 lishment for Fine Commercial ^Vo^k in New 

 York City. 



ff . H. WALISLEY & CO. 



SUCCESSORS TO 



K. & J. BECK, 



1016 Chestnut Street Phiia 



Microscopes and all 

 Accessories and Ap- 

 paratus. Photograph- 

 ic and Photo-Micro- 

 graphic Apparatus and 

 Outfits. 



Spectacles, Eye 

 Glasses, Opera and 

 Marine Glasses, etc. 



Illustrated Price List 

 mailed free to any ad- 

 dress. Mention Science 

 in corresponding with us. 



"THE ECLIPSE." 



COPYING APPARATUS. 



One thousand copies in black. No 

 special pen, no special paper, no 

 stencil required. The " Eclipse " 

 reproduces the natural handwriting 

 so exceedingly faithful that in most 

 cases " Eclipse" circulars have been 

 taken for ordinary written letters. 

 Specimens and circulars on applica- 



FELIX F. DAUS & CO., 



69S Broadway, New \'ork 



ICOOD NEWS 

 TO LADIES. 



Greatestmoueement^v^ of- 

 fered. Kow'a your time to get 

 up orders, for our celebrated 

 Teas and Coffees, and secure 

 »a beautiful Gold Band or Moss 



Eose Chitia Tea Set, Dinner Set, 



Gold iJand .Moss Rose Toilet Set, Watch, Brass Lamp, 



or Webster's Dictionary. For full particulars address 



THE GREAT AMERICAX TEA <^0., 



P. O. Bos 239. 31 and S3 Veeey St., Kew TorlT. 



ESTERBROOK'S 

 STEEL PENS. 



OF SUPERIOR Am STANDARD QUALITY. 

 Leading Nos,; 048, 14, 130, 135, 239, 333 



For Sale by all Stationers. 



THE ESTERBROOK STEEL PEN CO., 



Works : Oamden, N. J. '26 Johu St., New Vork. 



J. GRUNOW 



631 Sixtli Avenue, New Tork 



Established 1852. 



Microscope Stands, 

 Oil Immersion Object- 

 ives and Abbe Con- 

 densers for Bacteria 

 and Histological work, 

 of Objectives, Camera 

 Lucida and other ac- 

 cessory apparatus. 



JAMES MCGREERY& GO. 



Importers and Manufacturers. 



^iLKs, sAiiKS, num. 



The assortment of Plain Black 

 Silk Fabrics alone contains over 

 275 ditferent weaves and. quali- 

 ties ; of Fancy Blacks there are 

 about 200. 



Send for samples of quality and 

 style desired. 



BROADWAY AND ELEVENTH ST., 



NEW YORK CITY. 



Readers of Science 



Co7-respondmg or visithig ivith Adroer- 

 tisers, will confer a great Javor by mention- 

 ing the paper. 



Established 1859. 



H. A. DREW, 



^ Commercial Printer, 



5 Clinton Place, near Broadway, 

 New York. 



Wedding Orders, Souvenirs, Invitations, Or* 

 ders of Dance, etc., etc., done in the latest and' 

 most elaborate styles, at reasonable prices. 

 All Favors promptly attended to. 



JOflt^ t1A5TlN0S= 'A=R=11ART= "J05=TRIPR 



Fpes't. (JenMana^EP. VPpes't. 



FOR 



^ILLDSTR-AtiVE 

 AND ADVERTISINQ 

 PURPOSES 



,f^^^ Pi11i;ADELPrtl?\- P/^' 



;ne.w yorK'-e 



