Toma VACATION TOURS 
are afforded by the Burlington Route’s present 
LOW RATES TO COLORADO =.: WORLD’S FAIR 
These tours are many and varied. Here are a few rete 
Ask about any others that ilents wait you bette 
$3 (900 From Chic: - to Denver and return From Chicago to Denver and return $3900 
via St. Louis to Chicago. to Chicago. 
$9750! From St. Louis to Denver and return From St, Louis to Denver and return $9500 
to Chicago. to St. Louis. 
Yenver and return $3370 
Paul to Denver and return ree St.’ Paul t 
$3970! From St. >I 
to St. Paul via St. Louis. . Paul via St. Louis and Chicago. 
assenger 
By eeainy g $1.00 to any of the rates via St. Louis the p 
s the privilege of a ten- Sate’. ae over in St. Louis. 
x 
P. S. EUSTIS, Passenger ibionp Manager, 
HICAGO 
Please tell me about the tr its tour to Colorado and the World’s Fair. 
Name____ 
Address 
Lectures 
on the history of the 
Developmentof Chemistry 
Since the time of Lavoisier 
By Dr. A. LADENBURG 
Professor of Chemistry in The University of Breslau 
Translate 1 from the second German edition by LEONARD DOBBIN 
This - . g 
: , book contains sixteen lectures, tracing the development of chemistry 
Slice the Mine of) 1 BSc: 
ddit ¢ time of Lavoisier. Wherever necessary, the author himself has made 
a id rT, 1< 
rise a “and and corrections in the E nglish version. The subjects covered are the 
© anc . 
© and development of the different theories of matter and composition 0 
Stances 
€s, with a description of the researches of the great chemists. 
: 
lto a re degree the charm of the original text, if the 
hen once hee ans In 
*The tranc] 
ae See ont Drenerver 
~-9'0N 15 not ys res 4 
ve and ger ‘oo Strong; at any rate, the book is Bs rd to put down w 
Pe and general al ae nth 
ttentior f “se pdb ake- Ps : is 3 that it needs to be, and it is most ra ti it cl arenas et to the 
“a Lil Stude Ss Bes S 5 
tudents. . P. Saunders in the Te urnal of Physical Ch », June, 1903 
*V+-374 Pp., crown 8vo, cloth; nef, eon used $1.89 
The University of Chicago Press. -- :: Chicago, Illinois 
lia Ol. at OD: 
