I am more reconciled to iceberg transport than I was, the more especially as I will give you any length of time to keep vitality in ice, and more than that, will let you transport roots that way also.
(333/1.

The above letter was pinned to the following note by Mr.
Darwin.) In answer to this show from similarity of American, and European and Alpine-Arctic plants, that they have travelled enormously without any change.
As sub-arctic, temperate and tropical are all slowly marching toward the equator, the tropical will be first checked and distressed, similarly (333/2.

Almost illegible.) the temperate will invade...; after the temperate can [not] advance or do not wish to advance further the arctics will be checked and will invade.

The temperates will have been far longer in Tropics than sub-arctics.

The sub-arctics will first have to cross temperate [zone] and then Tropics.