e
of some kind of suggestion. In this he was strengthened somewhat by
having noted the fact that in his questions which he put to the horse,
he might proceed as far as to ask the impossible. He has always been
ready to offer himself in the tests which have been undertaken since
then.

On October 13, 1904, together with the two gentlemen mentioned in the
beginning of my report, I began my more detailed investigation, and
finished on November 29. We worked for several hours on the average of
four times each week. I take this opportunity of giving expression of
the recognition which is due to the two gentlemen. They were ready to go
to the courtyard in all kinds of weather, at times they went without me,
and they always patiently discussed the order and method of the
experiments and the results. Dr. von Hornbostel had the important task
of keeping the records, and Mr. Pfungst undertook the conduct of the
experiments. It was he, who, soon after the blinder-tests disclosed the
necessary presence of visual signs, discovered the nature of these
signs. Without him we might have shown the horse to be dependent upon
visual stimuli in general, but we never would have been able to gain
that mass of detail, which makes the case valuable for human psychology.
But I am tempted to praise not merely his patience and skill, but also
his courage. For we must not believe that Mr. von Osten's horse was a
"perfectly gentle" animal. If he stood untied and happened to be excited
by some sudden occurrence, he would make that courtyard an unsafe place,
and both Mr. Schillings and Mr. Pfungst suffered from more than one
bite. In this connection I would also express my obligations to Count
Otto zu Castell-Ruedenhausen, for his frequent intercession on our behalf
with the owner of the horse, and for his many evidences of good-will and
helpfulness.

After the publication of this report (Supplement IV), there was still
some further discussion of the case in societies of various kinds and in
the press, but no important objections were raised. A hippologist
thought that men of his calling should have been consulted, a
telepathist believed that telepathists should have been called in. There
was also some further talk of suggestion, will-transference,
thought-reading and the occult, but no attempt was made to elucidate
these vague terms with reference to their application to the case in
hand. Others adhered to the old cry of "fraud," for a share of whi