The Fossil Flora, by Lindley and Hutton, has been long known as the only general work containing figures and descriptions of the vegetable remains found in a fossil state in this country, and which must always be consulted by every scientific investigator of this subject. Since the completion of the third volume, more than thirty years ago, many important papers have been published on the Palæontological Botany of the British Islands, by Dr. Hooker, Bunbury, Prof. Haughton, Prof. Heer, Carruthers, and others, but no general work or continuation of the Fossil Flora has appeared, a desideratum very much needed, and which it is now proposed shall be supplied.