py — O. K.”’ stamped on every rsote 
Mustrated booklet 
The 0. K 
> 
75,000,000 WASHBURNE’S PAT. 
~ (0) K.? _ PAPER 
Ling o AX. FASTENERS 
J ES ot ; the ya reas 
convi i 
UPERIORITY Oo” % et 
oe . There is genuine pleasure in 
¥ their use as wellas Perfect Se- 
ONG SE curity. sily put on or taken 
ie oft with the thumb and finger. 
Can be used repeatedly and 
they always work.’’ Made 
boxes of 100 Fasteners each. 
fr 
. Mfg. Co., Syracuse, N. Y., U.S. A. ‘Nois 
N E W Methods of 
schoo) wv be THOD Ss; ekieewics. 
CONSTRUCTIVE BIBLE ST 
A i Ss ti 
Set of textbooks for those who wi-h to do systematic work in the 
he: own caused cwiacat Stirnabecbaa land nil tthe chant a. Sica oe 
+ ADDRESS DEPT. P 
HE UNIVERSITY OF CHICAGO PRESS 
AGO ILLINOIS 
The University of Chicago Press 
C Educational and Scientific works printed in 
“We , German, French, and all other modern 
guages Estimates Furnished 
VSS SST Saag ae 
58th Street and Ellis Avenue :: :: Chicago 
THE MEANING OF 
SOCIAL SCIENCE 
By ALBION W. SMALL 
320 pages, 12mo, cloth; postpaid $1.62 
Cynes a plan of co-oper- 
anon among the various types 
“a —— in social science. Its 
ng : is the proposition that the 
‘Sard rR of social science is to 
ode gent of all men in finding out 
heed of life, including in par- 
ee the means by which men may 
surely progress toward the 
est realizations of life. 
Sencar 
The University of Chicago Press 
Chicago * ; Illinois 
| EE 
@ "A picture of a thing be- 
comes almost immediately a 
thought." That is why there 
is an increasing demand for 
lanterns from schools and 
churches. 
BAUSCH & LOMB 
BALOPTICON 
MODEL C 
is a most desirable instrument for 
this work, and has, in fact, been de- 
signed with this very purpose in 
view. 
j It is easy to operate, is durable 
and can be used with various illumi- 
nants. At any time an attachment 
can be added for the projection of 
| postcards, photographs, maps, 
illustrations, and other opaque ob- 
jects in natural form and color. 
Descriptive circular 7D on request. 
oe Our N on a Photographic Lens, 
LE Mawenctes, Field Glass, Laboratory Ap- 
é paratus, Engineering or any other Scien- 
Instrament Guarantee. 
Rausch & lomb Optical ©. 
wEw YORK WASHINGTON cnicace SAN FRANCISC® 
UDNDON POCHESTER. N.Y. PANKFORT 
3 
mel 
