May 1, 1915, 4 years and 6
months.) Daughter of monkeys 3 and 10. First pregnancy began September,
1913.' The result of this pregnancy was, I am informed, a still-birth.

"The second pregnancy, which shall now especially concern us, resulted
likewise in a still-birth. Parturition occurred Saturday night, and the
writer first observed the behavior of the mother the following Monday
morning. In the meantime the laboratory attendant had obtained the data
upon which I base the above statements.

"At the time of parturition Gertie was in a 6 by 6 by 12 foot out-door
cage containing a small shelter box, with an exceptionally quiet and
gentle male (not the father of the infant) who is designated in
Hamilton's paper as Monkey 28, Scotty.

"My notes record the following exceptionally interesting and genetically
important behavior. On March 1, when I approached her cage, Gertie was
sitting on the floor with the infant held in one hand while she fingered
its eyelids and eyes with the other. Scotty sat close beside her
watching intently. When disturbed by me the mother carried her infant to
a shelf at the top of the cage. Repeatedly attempts were made to remove
the dead baby, but they were futile because Gertie either held it in her
hands or sat close beside it ready to seize it at the slightest
disturbance.

"Especially noteworthy on this, the second day after the birth of the
infant, are the male's, as well as the female's, keen interest in the
body and their frequent examinations of the eyes, as if in attempts to
open them. Often, also, the mother searched the body for fleas.

"Observations were made from day to day, and each day opportunity was
sought to remove the body without seriously frightening or exciting the
female. No such opportunity came, and during the second week the corpse
so far decomposed that, with constant handling and licking by the
adults, it rapidly wore away. By the third week there remained only the
shriveled skin covering a few fragments of bone, and the open skull from
the cavity of which the brain had been removed. This the mother never
lost sight of: even when eating she either held it in one hand or foot,
or laid it beside her within easy reach.

"Gradually this remnant became still further reduced until on March 31
there existed only a strip of dry skin about four inches long with a
tail-like appendage of nearly the same length.

"The male, Scotty, on this date was removed to another cage. Ge