La Plata seems to present such analogous facts, though I suppose the naturalisation of European plants has there taken place on a still larger scale than in Australia...
You will get four copies of my book--one for self, and three for the foreign botanists--in about ten days, or sooner; i.e., as soon as the sheets can be bound in cloth.

I hope this will not be too late for your parcels.
When you read my volume, use your pencil and score, so that some time I may have a talk with you on any criticisms.
LETTER 346.

TO HUGH FALCONER.

Down, December 17th, [1859].
Whilst I think of it, let me tell you that years ago I remember seeing in the Museum of the Geological Society a tooth of hippopotamus from Madagascar: this, on geographical and all other grounds, ought to be looked to.

Pray make a note of this fact.