An interesting modification of the mundane Glacial period theory is given in Belt's "The Naturalist in Nicaragua," 1874, page 265.

Mr.Belt's views are discussed in Wallace's "Geogr.

Distribution," 1876, Volume I., page 151.), and that it is the most important of all late phenomena with respect to distribution of plants and animals.

I hope your Review (350/2.

The history of the foundation of the "Natural History Review" is given in Huxley's "Life and Letters," Volume I., page 209.