t exists in men also,
and is really "a general law of vital energy."[120]

Sanctorius does not appear to have published the data on which
his belief was founded. Keill, an English, follower of
Sanctorius, in his _Medicina Statica Britannica_ (1718),
published a series of daily (morning and evening) body-weights
for the year, without referring to the question of a monthly
cycle. A period of maximum weight is shown usually, by Keill's
figures, to occur about once a month, but it is generally
irregular, and cannot usually be shown to occur at definite
intervals. Monthly discharges of blood from the sexual organs and
other parts of the body in men have been recorded in ancient and
modern times, and were treated of by the older medical writers as
an affliction peculiar to men with a feminine system. (Laycock,
_Nervous Diseases of Women_, p. 79.) A summary of such cases will
be found in Gould and Pyle (_Anomalies and Curiosities of
Medicine_, 1897, pp. 27-28). Laycock (_Lancet_, 1842-43, vols. i
and ii) brought forward cases of monthly and fortnightly cycles
in disease, and asserted "the general principle that there are
greater and less cycles of movements going on in the system,
involving each other, and closely connected with the organization
of the individual." He was inclined to accept lunar influence,
and believed that the physiological cycle is made up of definite
fractions and multiples of a period of seven days, especially a
unit of three and a half days. Albrecht, a somewhat erratic
zooelogist, put forth the view a few years ago that there are
menstrual periods in men, giving the following reasons: (1) males
are rudimentary females, (2) in all males of mammals, a
rudimentary masculine uterus (Mueller's ducts) still persists, (3)
totally hypospadic male individuals menstruate; and believed that
he had shown that in man there is a rudimentary menstruation
consisting in an almost monthly periodic appearance, lasting for
three or four days, of white corpuscles in the urine (_Anomalo_,
February, 1890). Dr. Campbell Clark, some years since, made
observations on asylum attendants in regard to the temperature,
during five weeks, which tended to show that the normal male
temperature varies considerably within certain limits, and that
"so far as I have been able to observe, there is o