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 Mr. Charles Hose is to be supplied for the Ferns that come from the Baram district of Sarawak, including Mt. Mulo, Mt. Dulit, Mt. Lambir, Niah, &c., and my own in all other instances.

I have followed the arrangement in Hooker and Baker's Synopsis Filicum, 2nd Edition, 1874. The Roman numerals refer to the Genus, and the Arabic to the Species; and I have indicated the position of new Ferna, as Mr. Baker does, by giving them the number of the species nearest to them with the addition of an asterisk.

It is much to be desired that the surviving author of the Synopsis may find it possible to bring out a new edition, as it has been long out of print, and an enormous addition to the number of known Ferns has been made since ita publication. The Supplement, "Ferns discovered or described since 1874," and subsequent lists of new discoveries published by Mr. Baker only in part supply this want, as they are hardly more than lists: for descriptions an immense number of publications have to be consulted, and these are seldom accessible to persons who live in the regions where novelties are to be found.