sCIENCE 
NEw SERIES. Vi SINGLE COPIES, 15 cTs, 
VOL. XIII. No. 334. FRIDAY, May 24, 1901. ANNUAL SUBSCRIPTION, $5.00. 
(ABSOLUTE) 
A chemically pure synthetic sub- 
stitute for absolute ALCOHOL-- « 
PURER STRONGER MORE STABLE CHEAPER 
YNTHOL may be used for every purpose for which alcohol is used, except 
for internal consumption. Being chemically pure it does not have as much 
odor as absolute alcohol from grain or wood. It is perfectly free from color, 
is non-ittitant to eyes or skin and has from ten to fifteen per cent. more solvent 
power than ordinary alcohol. 
PRICES: 
Iepint nets. eee eee ee ee $ .40 
Kygallonjsnetevcke 6) 6) ces pd 2.50 
1 bbl. of 50 gallons, per gallon, net, 2.25 
As a killing, fixing, or hardening agent it is in every respect equal to the best absolute alcohol and 
can be used as a substitute for it in the preparation of stains, reagents, etc. We offer a special low 
ptice on Synthol in barrel lots FOR MUSEUM PURPOSES. As a pteservative it is superior to 
any alcohol. Alcohol becomes tinged with color on exposure to light. Synthol retains its absolute 
colorlessness under all conditions. Sample supplied free to laboratories. . . . . + + + ++ 
MANUFACTURED EXCLUSIVELY FOR 
BAUSCH & LOMB OPTICAL CO. 
CHICAGO ROCHESTER, N. Y. NEW YORK 
