On the other hand, in the intertropical parts of America, Asia, and Africa, they have never been observed; nor at the Cape of Good Hope, nor in Australia.

(11/16.

I have given details (the first, I believe, published) on this subject in the first edition, and in the Appendix to it.

I have there shown that the apparent exceptions to the absence of erratic boulders in certain hot countries are due to erroneous observations; several statements there given I have since found confirmed by various authors.) ON THE CLIMATE AND PRODUCTIONS OF THE ANTARCTIC ISLANDS.
Considering the rankness of the vegetation in Tierra del Fuego, and on the coast northward of it, the condition of the islands south and south-west of America is truly surprising.

Sandwich Land, in the latitude of the north part of Scotland, was found by Cook, during the hottest month of the year, "covered many fathoms thick with everlasting snow;" and there seems to be scarcely any vegetation.