it appeared to be what she desired.
Nevertheless, this preference turned out shortly to have been erroneous
and, as the result of a practical trial, Lola changed her mind and
voted for anything "between 12 deg.--16 deg.!" Here is one more test I put with
regard to her susceptibility to touch: I got someone else to trace
figures with their fingers on the dog's back, placing myself so that I
could not see what was being described; then I put the questions, and
each time her replies tallied almost invariably. One put to her in this
manner was: "2 + 3?"; and "5" was given at once. While "7 + 4?"
elicited a prompt "11." Then a number was described and I said: "Twice
this number makes?"; to which she replied "8," four having been traced
on her back. We only tried this new test for a few days so that I can
give no more exact details about it--excepting this, that on that
particular day, she would only understand the figures _if inscribed in
this manner on her back_! It evidently amused her immensely, and we
could see that she seemed to "transfer her attention," as it were,
elsewhere. But though this test had been so successful with numerals,
it failed entirely with letters. This was incidentally an attempt on
quite a small scale at carrying out the tests which had been
successfully so put to the blind horse Bertho, by Karl Krall.

These experiments as to her susceptibility to touch, or pressure, led
to one slightly different, and which cannot as yet be said to have gone
beyond its initial stages. I took a set of weights of 5, 10, 20, 30,
100, 200, 400, and 500 grammes, and also others of 1 and 2 kilo, and
told Lola she must learn to know how heavy a thing could be. Then I
placed the weights separately between her two shoulder-blades, naming
them beforehand somewhat as follows--and having first written out a
chart for her which set forth in a plain and easy form what I was going
to say:

125 grammes = 1/4 lb.
250 grammes = 1/2 lb.
500 grammes = 1 lb.
1000 grammes = 1 kilogramme
100 lb. = 1 zentner

I then explained this carefully and questioned her at once:

"How many pounds are 375 grammes?" Answer: "3/4."[18] "How much are
1,000 grammes?" Answer: "2." I had intentionally refrained from putting
questions as to figures that were on her chart which I had left lying
before her; and after she had given her replies in accordance with the
pressure she had felt between her shoulders, I tested her ab