Appeal to the Imagination 
@ The ordinary lessons are tedious 
to many pupils whose imaginations 
would readily respond to pictorial dem- 
onstration. You can bring the whole 
world of knowledge before them in a 
simple, interesting form by means of a 
Bausch |omb 
Balopticon 
@ You can use it for ordinary transparent slides, 
but by ingenious attachment you can change to 
the projection of picture postcards, photographs 
prints, etc., in their natural color. The Balopticon 
has earned wide popularity for its educational 
value. Write for descriptive circular 7D 
Our name, backed by over balf a century of 
experience, is on all our products — lenses, 
microscopes, field glasses, projection apparatus, 
engineering and other scientific instruments. 
Bausch & lomb Optical G. 
MEW YORK CHICACSD SAN FR 
LONDON “ROCHESTER. NY. rRANKFORT 
The Country Church 
and the Rural Problem 
By KENYON L. BUTTERFIELD 
President of the Massachusetts Agricultural College 
CHE aim m of pireae on s soak 
roble 
nce can wield more power or achieve 
far-reaching results than the church itself, 
But the church to Which he looks for the i in- 
in perso sat se at 3 ie, in industrial 
effort, and in social and political eelkiiauci 
is not the narrow denominational or institu- 
am of wo 
tional body without a program o n 
of effort ew ave a church which, 
nder the inspiration and guidance of the 
community for lea ing men an eet oa 
new birth of aspiration and hop 
165 pages 12mo, cloth a $1.08 
The University of Chicago Press 
CoH: 1 CA. GOS ee En. 0 1S 
Contributions to Medical Science 
By Howard Taylor Ricketts 
Published .. be Tribute ag His Memory by His 
Collea, 
s under the Auspices of the 
Chica ra omstickal Society 
R. RICKETTS died of typhus fever in a 
Ma; to1o. He 
sone Pre kicaing i rs. Pe! is pressive 
so tes was 8 deliberately 
laid re in the el i of humanity 
508 pp., 8vo cloth; net $5.00, domestic postage 33C- 
The University of Chicago Press 
Chicago Illinois 
