at he felt slightly irritable; that the penis
erected with the slightest provocation, and that this peculiar
feeling usually passed away with a nightly emission. Indeed, so
regular was the matter that he usually wore a loin garment at
these times, to prevent the semen getting on the bedding. This
peculiar feeling ordinarily continued for two or three days. He
recalls at these times that he felt that he would like to wrestle
with some one, for there seemed to be a muscular tension. These
states returned with apparent regularity, and the intervals
seemed to be about six weeks, though no effort was made to
measure the periods until 1893. The following notes are taken
from the diaries of X.:--

"Thursday, December 29, 1892. The peculiar feeling.
(This is the only entry.)

"Thursday, February 9, 1893. The peculiar feeling.
(The diary notes that X. awoke nights to find erections, and
that the feeling continued until Sunday night following, when
there was an emission.)

"Friday, March 27, 1893. The peculiar feeling.
(The diary notes that there was an emission the next night,
and that the feeling disappeared.)

"Wednesday, May 3, 1893. The peculiar feeling.
(The diary notes that it continued until Saturday night, when
X. had sexual relations, and that it then disappeared.)

"Wednesday, June 14, 1893. The peculiar feeling.
(The diary states that the next night X. had an emission,
and the disappearance of the feeling.)

"Thursday, July 27, 1893. The peculiar feeling.
(The diary notes that it was apparent at about 3 o'clock
that afternoon. That night at 10 o'clock, X. had sexual
intercourse, and the feeling was not noted the next day.)

"Friday, September 8, 1893. The peculiar feeling.
(Continued until Tuesday, the 11th, and then disappeared.
No sexual intercourse, and no nightly emission.)

"Wednesday, October 25, 1893. The peculiar feeling.
(Continued until Saturday night, when there was a nightly
emission.)

"Saturday, December 9, 1893. The peculiar feeling.
(Continued until Monday night, when there was sexual
relations.)

"It will be noted that the intervals observed were of about six
weeks' duration, excepting one, that from September to October,
when it was nearly seven