Yet somehow into Australia with its queer monotremes and marsupials entered triumphant man--man and the dog with him.

Haeckel has suggested that man followed the dog, playing as it were the jackal to him.

But this sounds rather absurd.

It looks as if man had already acquired enough seamanship to ferry himself across the zoological divide, and to take his faithful dog with him on board his raft or dug-out.

Until we have facts whereon to build, however, it would be as unpardonable to lay down the law on these matters as it is permissible to fill up the blank by guesswork.
It remains to round off our original survey by a word or two more about the farther extremities, west, south, and east, of this vast southern world, to which south-eastern Asia furnishes a natural approach.