wed, Mr. Busch again declared that he had
noticed no trace of a sign; he maintained that, in the selecting of
colored cloths (especially when they were placed so closely together)
and in the approach toward a person, there was no possibility whatever
that some trick was being used.

During the session of September 12th, Mr. von Osten agreed to two sets
of experiments.

1. Another man was to put the question to the horse. Mr. von Osten
himself was to stand, back to back to the questioner and to bend
forward, so that he was effectually hidden from the horse's view, yet
could, by means of occasional calls, make his presence known to the
animal. The assumption was that it would be conducive to success if the
horse knew that the master was present and was awaiting the answer, and
yet at the same time the possibility of receiving a sign was obviated.

2. Another man in Mr. von Osten's absence was to ask the horse to tap a
certain number. Then the questioner was to leave, and Mr. von Osten,
returning, was to ask the horse to perform some arithmetical process
with the number which was thus unknown to the master. Mr. von Osten said
that he thought that this method was somewhat risky, since the horse
would be aware that he, Mr. von Osten, did not know the number, and
might therefore be in a humor to play some prank.

The questions of the first sort were answered with but very few errors.
Mr. Hahn and Count zu Castell asked simple questions in arithmetic. When
Mr. von Osten withdrew into the stable, the count put several other
problems, among them the counting of persons and of windows, all of
which were solved correctly.

Between the first and second series of tests the following experiments
were interpolated. The names of six members of the commission were
written upon six slates respectively, which were then suspended from a
string. Mr. von Osten pointed to one of the men and asked: "On which of
the slates is this gentleman's name to be found?" The correct number was
tapped in every case. The command to approach the slate in question was
also obeyed as a rule, although this was not as uniformly successful as
tapping.

In the conference which followed, Mr. Busch declared that the feats
appeared inconceivable to him; and again none of the men had noted
anything in the way of signs.

Now followed the second series of tests mentioned above. In order to be
sure to get the correct responses, Mr. Schillings, who up to this poi