SCIENCE. 



[Vol. XII. No. 287 





he: world. 



5^ I --'GOLDiJEPALr 



Palace Cur C< 

 Mnson & H ml n Organ aod Piano 

 Co A-c A.C 



Repairs Everything. 



brought a lot of 



ble 





■'"'^' 



Glue s manufactured solely by the 



RUSSIA CEMENT CO. 



OrOUCESTER, MASS. 

 Send 10c and dealers' card who 

 doesn t keep n stock for 



W. H. WALISLEY & CO 



SUCCESSORS TO 



K. & J. BECK, 



1C16 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. 



621 Sixtli A-venue, ]N 



Established 1852 



Microscope Stands, 

 Oil Immersion Object- 

 ives and Abbe Con- 

 densers for Bacterial 

 and Histological work, 

 of Objectives, Camera 

 Lucida and other ac- 

 cessory apparatus. 



HYDRAULIC 



ELEVATORS and 

 WATER MOTORS 



Send for New Catalog ce 



Tuerk Hydraulic Power Co 



CHICAGO. NEWYORK 



39 Dearborn St. 12 Cortlandt St 



UNDERWOOD'S 

 WRITING FLUIDS, 



Used by United States Government in ajl Departments 

 and by Leading Banking and Mercantile* Houses, bend 

 for Samples. 



J. UNDERWOOD & CO. 



163 La Salle St., Chicago. 30 Vesey St., N.Y. 



^-a^ 



KIMSALL'S SATIN STRAIGHT 

 CUT CIGARETTES. 



People of refined taste who 

 desire exceptionally fine cigar- 

 ettes should use only our 

 STRAIGHT CUT, put up 

 in satin packets and boxes of 

 los. 20s. 50s. and IOCS. 

 14 FIRST PRIZE MEDALS. 



WM. S. KIMBALL cSo CO. 



TO 



fercd. Kow's your time to get 

 up orders for our celetirated 

 Teas and ColTeps. and secure 

 a beautiful Gold Hand or .Moss 

 Eoso China Tea Set. Dinner Set, 



Golii jianil .Hoss Rose Toilet Set, "n'atcli. Brass Laniji. 



or A\^?hster's pictionary^ Forfull particnUirs address 



TILESTON & HOLLIMSWORTH, 



64 Federal Street, Boston. 



Manufacturers of Fine Book Papers for let- 

 ter press and cut printing. The attention of 

 publisheis and printers is called to our Ivory 

 Finish (no gloss) paper. A boon to studious 

 men, reflecting no dazzling glare injurious to the 

 eyes. Approved and used by the best educa- 

 tional publishers in the country. 



A TEMPORARY BINDER 



for Science is now ready, and will be mai 

 postpaid on receipt of price. 



Cloth 

 Half MoK 



7.5 ' 



This binder is strong, durable and 

 elegant, has gilt side-title, and allows 

 the opening of the pages perfectly 

 flat. Any number can be tahen out 

 or replaced without disturbing the 

 others, and the papers are not muti- 

 lated for subsequent permanent bind- 

 ing. Filed in this binder, Science is 

 always convenient for reference. 



N. D. C. HODGES, 



47 Lafayette Place, New York. 



Unalterable 



& Fraearnt 



PIASTE 



A strong and 

 Photographers, 

 Companies. Banks, and family and office use. Conta; 

 no acids. Unlike Mucilage, adheres and dries imme< 

 atcly. N. Y. Liquid Glue and Adhesive Co., Prepar. 

 of Peter Cooper's Glue in Liqud Form 18 N Willi: 

 St Nev\ork Lsed in th s office 



A NEW CORSET. 



JAMES McCREEKY & CO. are 

 introducing a Corset which they 

 reconimeud as the best they have 

 ever had at the price — one dollar. 

 Tbey are made in white and in 

 drab, are silk-stitched, edged with 

 lace, and are perfect fitting. 



MAIL OKDERS ARE PROMPT- 

 LY EXECUTED. 



JAMES McCREERY ^ CO. 



BROADWAY AND ELEVENTH STREET, 



NEW YORK. 



f*. 33. So Co 



(Royle's ratent) 



SELF-POURING 

 COFFEE and TEA 



Teapot 8A\ES at least 25 per cent of Tea, or brewi 

 Tea proportiODat«l7 better Send for Libts. 



PAINE, DIEHL & CO., Philada., Pa. 



ESTERBROOK'S 

 STEEL PENS. 



OF SUPERIOR AND STANDARD QUALITY. 

 Leading Nos.: 048, 14, 130, 135. 239, 333 



For Sale by all Stationers. 



THE ESTERBROOK STEEt PEN CO., 



Worlis Camden N J i6 John St., New York. 



A-R riART= =J05=TRIPP. 

 Qet^■I1altw^'^P. VPpeS't. 



m iLLUSTK-ATiVe 



AND ADVERTISINQ 

 PURPOSES 



BR^M CM -AT 7S a C^ESTtlUT STi 

 jPrtlhADELPrila-P/^' 





