118 THE AMERICAN MONTHLY [Apr 
feel that to-night we are offering an exceptionally enter- 
taining and instructive treat in presenting ‘Color Photo- 
graphy.’ It has been said to me, ‘You are a club of mi- 
croscopists ; therefore, what have you to do with color 
photography ?’ I shall refer this question to Mr. F. E. 
Ives, whose persistent investigations of photography in 
all its branches, extending twenty years, have culminated 
in the triumph he is about to exhibit to us. Mr. Ives then 
proceeded to demonstrate the “kromskop” system of re- 
cording and reproducing colors by photography, with spe- 
cial reference to its application in pathology. The im- 
portance of color in the diagnosis of many diseased con- 
ditions, and the desirability of obtaining and preserving 
for future reference and study the appearance as to color 
as well as form in many diseased conditions, having long 
been felt hy the medical world. Both upon the screen and 
in the kromskops, color photographs of pathological sub- 
jects were shown, and also examples of a different char- 
acter, such as landscapes, portraits and works of art. Mr. 
Ives gave a concise exposition of the principles of the sys- 
tem, explaining the fact that it bore the same relation to 
color vision that the moving picture apparatus does to 
life motion, and the phonograph to sound—each system 
producing in the first instance, not a reproduction of the 
thing itself, but a record, which was afterwards transla- 
ted to the eye or ear by means of a special device. A 
special feature of the demonstration was a description of 
the methods by which the process, first successfully only 
as a laboratory experiment, has been reduced to such a 
degree of simplicity and precision that it is coming into 
general practical use.—NATHAN SMILIE, M.D. Secretary. 
NEW PUBLICATIONS. 
Detroit Medical Jowrnal.—April witnesses Vol. I, no I 
of a new 32 pp. periodical. The frontispiece and first ar- 
