LITHOLOGICAL 

 ^J^ OR LAPIDARY 



LATHES. 



ALSO OUTFITS COMPLETE 

 of Foot Power Machinery for 

 the actual business of the 

 workshop of wood or metal 

 workers. Catalogue Free. 



W. F. & JOHN 



BARNES CO., 

 No. 638 Ruby St., 

 Rockford, 111. 



GERMAN SIMPLIFIED. 

 SPANISH SIMPLIFIED. 



The following will be found eminently practical for 

 self-instruction: (i.) German Simplified— Complete in 

 12 numbers (with keys) S1.20. (2,) Spanish Simplified — 

 from 10 to 12 numbers (with keys) 10 cts, each ; No, 5 

 now ready ; anew number on the first of every month ; 

 Sold by all booksellers. Sent, postpaid, on receipt of 

 price, by Prof. A. Knoflach, 140 Nassau St., New York. 



CANDY 



Send $1.25, $2.10, 

 _ $3.50 for a retail box, by 

 express," prepaid, of tlie BEST CANDIES 

 IN THE WORLD, put up in handsome 

 boxes. All strictly pure. Suitable for presents. 

 Try it once Address 



C. F. GUNTHER, Confectioner, 



212 State St., Chicago. 



V O L A P U K 



00 for Handbook of Volapuk, by Chas. E. 

 ;o S. R. WINCHELL & CO., Educational 

 185 Wabash Ave.. Chicago. 



BARGAINS IN BOOK'S, AUTOGRAPHS, ETC. 

 Catalogues free. Lorr.aine Library. 41 W. 31st. 

 St., New Vork. 



B 



Mann's Reterence Indexes. 



References lo and transcripts or translations of the lit- 

 erature of ANY SUBJECT fumished by B: PlCkMAN 

 MANN, Washington, D. C, 



Correspondence fee, 50 cents. Explanatory circulars 

 free. 



"How to Strengthen the Memory." 



Rev. E. L. Kelly, of Paterson, N. J., writing of Dr. 

 Holbrook's book, " How to Strengthen the Memory ; 

 or, Natural and Scientific Methods of Never Forgetting," 

 says J "I have read this treatise, this gem, and find a 

 mme of wealth hidden in its pages. By it I was enabled 

 last evening to learn the poem ' Stabat Mater.' in Latin. 

 It took a little time, but the results were marvelous." 

 Catalogue and prospectus free. 



Mailed to any address on receipt of $1 , by 



M. L. HOLBROOK CO.. 13 Laight St., New York. 



SCIENCE. 



^THE ONLY GENUINE 1 1 

 LlQUIU^ILUE 



UNEQUALLED for CEMENTING 



[Vol. XI. No. 259 



SussiaUemeirtCo,, 



COLD MEDALS. 



These glues are usod in the Smithsouiau Institute 

 at Washiugtou for all its work of mouutiiig speoi- 

 meus — by the Goverumeut Arsenals and Depart- 

 ment Buildings, by the Pullman Palace Car Co., 

 Mason & Hamlin Organ and Piano Co., and by 

 fhousanda of flrst-clasa maunfacturers aud mechan- 

 ics throughout the world, for all kinds of fine work. 

 Pronounced STRONGEST ADIiKSIVE KNOWN. 

 Sold in tin cans for mechanics and amateurs, and 

 In bottles for family use. The total quantity sold 

 between Jan., 18S0, and Jan., 1885, in all parts of the 

 world amounted to over 32 million' bottles. Be 

 sure and get the genuine Lepage's made only by 

 Russia Cement Co. 



The Travelers Insurance Company 



of Hartford, Conn., organized 1864, issues both Life 

 Policies and Accident Policies, Only large accident 

 company m Amenca, Only $5 a year to professional 

 and business men for each $1,000 insurance, with $5 

 weekly mdemnity. Has paid policy-holders nearly 

 $11,000,000. All policies non-forfeitable. All claims 

 paid, without discount, and immediately on receipt of 

 satisfactory proof. 



KIMBALL'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 loos. 

 14 FIRST PRIZE MEDALS. 



WM:. S. KIMBALL &, CO. 



MARVELOUS 



MEMORY 



DISCOVERY. 



Wholly unlike artificial systems. 

 Any book learned in one reading. 



Recommended by Mark Twain, Richard Proctor. 

 the Scientist; Hon. W. W. Astor; Judah P. Benja- 

 min; Dr. Minor, &c. Class of 100 Columbia Law stud- 

 ents ; two classes of 200 each at Yale ; 400 at University 

 of Penn., Phila., 400 at Wellesley College ; 350 Oberlin 

 College, and three large classes at Chautauqua University, 

 &c. Prospectus post free from, 



PROF. LOISETTE, 237 Fifth Ave.. New York. 



GOOD NEWS 

 TO L ADIES. 



GreatestoutlucemeD^Tver of- 

 fered. Kow's your lime to get 



I beautiful Gold Band .. 



„ .^^_^_^_ Rose China Tea Set, Dinner Set, 



Gold Hand Moss Rose Toilet Set, Watch, Brass Lamp, 



"r Webster's Dictionary. For full particulars address 



THE GREAT AMERICAiV TE.4 C:0., 



P. O. Box 889. 31 and S3 Vesey St., New York, 



co4^'«. 



» #- ^K ^ALMOST AS PALATABLE 

 t't^^^'^ AS MILK. 



Remarkable as a 

 FLESH PRODUCER. 

 Persons g^-ln rapidly 



'vt'tlile taking it. 



"* SCOTT'S EMULSION 



Is ac1;noTvledf;ccl by Physicians to be the FINEST 

 and BEST preparation o£ its clas3 for the relicl of 



coNsnuFTioy, scrofut.a, OEXrr it. 

 nr.niT.iTT. wasting disease.^ of 



CniLDltElf, and CTIItOSIC CO I 'C US. 



Ma. depggists. Scott & Bowne, Nlw York, 



JAMES McCREERY & CO. 



Have entered upon the second Season for 

 their Toboggan Suits, so well-known last 

 winter on Toboggan Slides in New York 

 city and vicinity. They are made for 

 Ladies, Gentlemen, and Children, in beau- 

 tiful designs, exclusive styles, and as low 

 in price as possible. 



They will be made to measure at short 

 notice, and may be safely ordered by mail. 



These suits are quite indispensable for 

 the full enjoyment of this favorite midwin- 

 ter sport. 



Orders by mail receive careful and prompt 

 attention. 



BROADWAY AND ELEVENTH ST., 



NEW YORK. 



W.H.WALMSLEY&CO. 



SUCCESSORS TO 



K. & J. BECK, 



1016 Chestnut Street, Phila, 



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 ij 

 in corresponding with us. 



