audience; they were as follows: (4 x 7 - 13) / 3 = 5,
2 x 10 / 4 = 5, 8 x 9 / 12 = 6.

"When the problem [3rt]27 was given Rolf proclaimed the correct number
'3,'--he immediately followed this, however, by spelling out: 'nid
wurdsl' ('no more roots'), implying that he declined anything further
to do with that form of reckoning; he had indeed, objected to 'roots'
for some time past! He next proceeded to name the various persons he
recognized in the assembly--the first being, 'dand, speisl basl' (Frau
Dr. Speiser, aus Basel); 'glein' (a Herr Klein, whom he had not seen
for two years); further, 'ogl lsr' (Herr Landsgerichtsrat Leser). When,
however, he was asked by a gentleman sitting in the front row whether
he knew him (the gentleman in question had sent him notes from time to
time), he replied: 'lol nid wisn' (Lol doesn't know). (N.B. Rolf is in
the habit of referring to himself as 'Lol.')

"In order to subject him to an unexpected test I had brought with me a
box containing a 'may-bug' made of papier mache, the inside of which
was filled with biscuits. After Frau Dr. Moekel had retired from the
platform I opened my box and showed it to Rolf. He pushed his nose into
it, exhibiting marked interest and seemed impatient to communicate the
matter to his mistress, therefore without more ado he spelt out:
'maigfr in sagdl, inn was dsm sn' (i.e. 'Maikafer in der Schachtel;
innen was zu essen') (May-bug in box; inside something to eat), adding,
presumably as an after-thought, 'nid gefressn' (nicht gefressen; didn't
eat it!). Rolf had therefore recognised the biscuits inside the may-bug
by their smell only--and was anxious that she should know that they
hadn't been given him to eat! After this a gentleman in the audience
asked permission to put a secret test. The object selected was shown to
the dog in such a manner that his mistress had to turn aside so as not
to see it. But Rolf had become obstinate and refused to name the thing,
and he insisted on spelling out: 'nid, lol rgrd der wisd man': he
appeared to be 'geaergert' by the 'wueste man' (worried, or vexed by the
rough man)--and it may, indeed, have been that the dog sensed a certain
distrust of his mistress, or that, as is often the case with other
dogs, that he was reluctant to 'show off' at the request of an entire
stranger. Another time, should a similar trial be contemplated, it
would be wiser if the article to be named by the dog were--even if
handed up by the perso