arch. So far as I know,
there are as yet no published reports of studies made at this station.
It seems from every point of view desirable that American psychologists
should, without regard to this initial attempt of the Germans to provide
for anthropoid research, further the establishment of a well equipped
American station for the study not only of the anthropoid apes but of
all of the lower primates.

[Footnote 1: See bibliography at end of report.]

In the early months of the war while I was making every effort to obtain
reliable information concerning conditions in the Canary Islands, I
received an urgent invitation from my friend and former student, Doctor
G. V. Hamilton, to make use of his collection of animals and laboratory
at Montecito, California, during my leave of absence from Harvard. This
invitation I most gladly accepted, and in February, 1915, I established
myself in Santa Barbara, in convenient proximity to Doctor Hamilton's
private laboratory where for more than six months I was able to work
uninterruptedly under nearly ideal conditions.

Doctor Hamilton without reserve placed at my disposal his entire
collection of animals, laboratory, and equipment, provided innumerable
conveniences for my work, and in addition, bore the entire expense of my
investigation. I cannot adequately thank him for his kindness nor make
satisfactory acknowledgment here of his generous aid. Thanks to his
sympathetic interest and to the courtesy of the McCormick family on
whose estate the laboratory was located, my work was done under wholly
delightful conditions, and with assistance from Ramon Jimenez and Frank
Van Den Bergh, Jr., which was invaluable. The former aided me most
intelligently in the care of the animals and the construction of
apparatus; and the latter, especially, was of very real service in
connection with many of my experiments.

The collection of animals which Doctor Hamilton placed at my disposal
consisted of ten monkeys and one orang utan. The monkeys represented
either _Pithecus rhesus_ Audebert (_Macacus rhesus_), _Pithecus irus_ F.
Cuvier (_Macacus cynomolgos_), or the hybrid of these two species
(Elliot, 1913). There were two eunuchs, five males, and three females.
All were thoroughly acclimated, having lived in Montecito either from
birth or for several years. The orang utan was a young specimen of
_Pongo pygmaeus_ Hoppius obtained from a San Francisco dealer in
October, 1914 for my use. His age a