Quotation from: The Beasts of Tarzan

Written by: Edgar Rice Burroughs

For the first time in his life, Tarzan of the Apes had been lost in
the jungle. That the experience should have befallen him at such
a time seemed cruel beyond expression. Somewhere in this savage
land his wife and son lay in the clutches of the arch-fiend Rokoff.

What hideous trials might they not have undergone during those
seven awful days that nature had thwarted him in his endeavours to
locate them? Tarzan knew the Russian, in whose power they were,
so well that he could not doubt but that the man, filled with
rage that Jane had once escaped him, and knowing that Tarzan might
be close upon his trail, would wreak without further loss of time
whatever vengeance his polluted mind might be able to conceive.