THE PROGRESS OF SCIENCE 
Physical Laboratory, erected and 
equipped by Mr. S. S. Palmer, and 
endowed with $200,000 by Mr. D. B. 
Jones and Mr. T. D. Jones, is ad- 
mirably adapted for work in physics 
and electrical engineering. The three 
floors have an area of approximately 
two acres for the work of instruction 
and research, and every need in the 
way of appliances and apparatus is 
provided. 
Guyot Hall, completed last year at 
a cost of $425,000, is divided about 
equally between biology and geology, 
giving the latter science probably the 
best provision in the country. The 
building contains over a hundred 
rooms, including a large museum. 
Biology has in addition a separate 
building as a vivarium for the study 
of living plants and animals. The 
aquaria have both sea and fresh water, 
and there is provision for insects, am- 
phibians, reptiles, birds and mammals. 
Near by is a pond and stream where 
animals may be kept under natural 
conditions. 
Princeton offers opportunities for 
study and research in the natural and 
exact sciences which are in some ways 
unique. The situation in the country, 
but within easy reach of New York 
and Philadelphia, offers many advan- 
tages. With its peculiar attractions, 
Princeton takes its place with the 
great universities so closely lining 
the eastern seaboard—Harvard, Yale, 
Columbia, Princeton, Pennsylvania and 
the Johns Hopkins. 
COMPARATIVE PSYCHOLOGY 
AMERICA 
Tue last number of the Zeitschrift 
fiir Psychologie devotes twenty-two 
pages to a review of the recent litera- 
ture of comparative psychology. This 
review covers more or less adequately 
the material for the years 1907, 1908 
and 1909. Twenty-eight articles are 
noted of which nineteen are by Amer- 
IN 
ican authors, one by an Englishman | 
and the remaining eight by Germans. 
This review emphasizes the fact that 

2a 
comparative psychology is largely an 
American branch of science. It began, 
in so far as the study of higher ani- 
mal forms in this country is concerned, 
in 1898, with the classical work of 
Thorndike on ‘“ Animal Intelligence,” 
which was followed three years later 
by his study of the “ Mental Life of 
the Monkeys.” Shortly afterwards 
small comparative laboratories were 
added to the already existing experi- 
mental laboratories of Clark, Harvard 
and Chicago, and in these the great 
bulk of the animal work has since been 
done. Recently a fairly adequate ani- 
mal-behavior laboratory has been added 
to the psychological department of the 
Johns Hopkins University. It has 
been an interesting fact in the develop- 
ment of this field that the work has 
not been confined wholly to specially 
developed technical laboratories. Sev- 
eral important pieces of work have ap- 
peared under psychological auspices 
from the universities of Cornell, IIli- 
nois and Stanford and from the zoolog- 
ical laboratories of the universities of 
Chicago, Harvard and Johns Hopkins, 
and of the Carnegie Institution. 
The work in this country has been 
characterized by systematic and long- 
continued studies of certain groups of 
problems; while that in foreign coun- 
tries has been more sporadic. The 
work of Pfangst on “ Der kluge Hans,” 
which has been translated by Mr. Carl 
Rahn and that of Katz and Révész on 
the light sense of the chick are the two 
conspicuous examples of systematic 
and careful work in Germany. In the 
United States work has been centered 
around three problems: (1) the gen- 
eral method of learning (problem 
boxes, ete.) which gives ac- 
quaintance with the animal’s instinet- 
ive capacities and prepares the way 
for a study of (2) imitation (and the 
effect of tuition) and (3) the deter- 
mination of the delicacy and complete- 
ness of its sense-organ equipment. 
The first problem received the creat- 
est amount of attention during the first 
mazes, 
