(_Zeitschrift fuer
Ethnologie_, 1876, pp. 22-25), while among the Batta, of Sumatra,
Hagen found that small stones are inserted by an incision under
the skin of the penis (_Zeitschrift fuer Ethnologie_, 1891, ht. 3,
p. 351).

In the Malay peninsula Stevens found instruments somewhat similar
to the _ampallang_ still in use among some tribes, and among
others formerly in use. He thinks they were brought from Borneo.
(H.V. Stevens, _Zeitschrift fuer Ethnologie_, 1896, ht. 4, p.
181.) Bloch, who brings forward other examples of similar devices
(_Beitraege zur AEtiologie der Psychopathia Sexualis_, pp. 56-58),
considers that the Australian mica operation may thus in part be
explained.

Such instruments are not, however, entirely unknown in Europe. In
France, in the eighteenth century, it appears that rings,
sometimes set with hard knobs, and called "aides," were
occasionally used by men to heighten the pleasure of women in
intercourse. (Duehren, _Marquis de Sade_, 1901, p. 130.) In
Russia, according to Weissenberg, of Elizabethsgrad, it is not
uncommon to use elastic rings set with little teeth; these rings
are fastened around the base of the glans. (Weissenberg,
_Zeitschrift fuer Ethnologie_, 1893, ht. 2, p. 135.) This
instrument must have been brought to Russia from the East, for
Burton (in the notes to his _Arabian Nights_) mentions a
precisely similar instrument as in use in China. Somewhat similar
is the "Chinese hedgehog," a wreath of fine, soft feathers with
the quills solidly fastened by silver wire to a ring of the same
metal, which is slipped over the glans. In South America the
Araucanians of Argentina use a little horsehair brush fastened
around the penis; one of these is in the museum at La Plata; it
is said the custom may have been borrowed from the Patagonians;
these instruments, called _geskels_, are made by the women and
the workmanship is very delicate. (Lehmann-Nitsche, _Zeitschrift
fuer Ethnologie_, 1900, ht. 6, p. 491.) It is noteworthy that a
somewhat similar tuft of horsehair is also worn in Borneo.
(Breitenstein, _21 Jahre in India_, 1899, pt. i, p. 227.) Most of
the accounts state that the women attach great importance to the
gratification afforded by such instruments. In Borneo a modest
woman symbolically indicates to her lover the exact length o