vary, and Peterman speaks of a
stone in the ovary. Uterine calculi are described by Cuevas and Harlow;
the latter mentions that the calculus he saw was egg-shaped. There is
an old chronicle of a stone taken from the womb of a woman near Trent,
Somersetshire, at Easter, 1666, that weighed four ounces. The
Ephemerides speaks of a calculus coming away with the menstrual fluid.

Stones in the heart are mentioned by medical writers, and it is said
that two stones as large as almonds were found in the heart of the Earl
of Balcarres.

Morand speaks of a calculus ejected from the mouth by a woman.

An old record says that stones in the brain sometimes are the cause of
convulsions. D'Hericourt reports the case of a girl who died after six
months' suffering, whose pineal gland was found petrified, and the
incredible size of a chicken's egg. Blasius, Diemerbroeck, and the
Ephemerides, speak of stones in the location of the pineal gland.

Salivary calculi are well known; they may lodge in any of the buccal
ducts. There is a record of the case of a man of thirty-seven who
suffered great pain and profuse salivation. It was found that he had a
stone as large as a pigeon's egg under his tongue.

Umbilical calculi are sometimes seen, and Deani reports such a case.
There is a French record of a case of exstrophy of the umbilicus,
attended with abnormal concretions.

Aetius, Marcellus Donatus, Scaliger, and Schenck mention calculi of the
eyelids.

There are some extraordinary cases of retention and suppression of
urine on record. Actual retention of urine, that is, urinary secretion
passed into the bladder, but retention in the latter viscus by
inanition, stricture, or other obstruction, naturally cannot continue
any great length of time without mechanically rupturing the vesical
walls; but suppression of urine or absolute anuria may last an
astonishingly extended period. Of the cases of retention of urine,
Fereol mentions that of a man of forty-nine who suffered absolute
retention of urine for eight days, caused by the obstruction of a uric
acid calculus. Cunyghame reports a ease of mechanic obstruction of the
flow of urine for eleven days. Trapenard speaks of retention of urine
for seven days. Among the older writers Bartholinus mentions ischuria
lasting fourteen days; Cornarius, fourteen days; Rhoclius, fifteen
days; the Ephemerides, ten, eleven, and twelve days. Croom notes a case
of retention of urine from laceration of the