mad.

"MON DIEU!" she cried; "he is a beast!" For the strong, white teeth
of the ape-man had found the throat of one of his assailants, and
Tarzan fought as he had learned to fight with the great bull apes
of the tribe of Kerchak.

He was in a dozen places at once, leaping hither and thither about
the room in sinuous bounds that reminded the woman of a panther she
had seen at the zoo. Now a wrist-bone snapped in his iron grip,
now a shoulder was wrenched from its socket as he forced a victim's
arm backward and upward.

With shrieks of pain the men escaped into the hallway as quickly
as they could; but even before the first one staggered, bleeding
and broken, from the room, Rokoff had seen enough to convince him
that Tarzan would not be the one to lie dead in that house this
night, and so the Russian had hastened to a nearby den and telephoned
the police that a man was committing murder on the third floor
of Rue Maule, 27. When the officers arrived they found three men
groaning on the floor, a frightened woman lying upon a filthy bed,
her face buried in her arms, and what appeared to be a well-dressed
young gentleman standing in the center of the room awaiting the
reenforcements which he had thought the footsteps of the officers
hurrying up the stairway had announced--but they were mistaken in
the last; it was a wild beast that looked upon them through those
narrowed lids and steel-gray eyes. With the smell of blood the
last vestige of civilization had deserted Tarzan, and now he stood
at bay, like a lion surrounded by hunters, awaiting the next overt
act, and crouching to charge its author.