three, as the case may be. After the word "range" we give the climatic zones in which the plant grows, beginning to count from below, so that one denotes the Lower, two the Middle, and three the Upper zone. Then follows, for the plants restricted in the manner which the words are intended to indicate, the adjectives Xerophilous or Maritime.
For an explanation of what is meant by the term Xerophilous we must refer our readers to the postscript to chapter I. The species marked Maritime are those, about fifty in number, which are restricted to the sea-coast. Then follows a paragraph stating in what kinds of situation the plant grows, its frequency and its special localities if it is considered rare enough to make it worth while to enumerate them. It is only for quite the rarer species that the particular stations are stated with any considerable detail. In enumerating the localities we always begin with the north and work southward. "F" means Winch's Flora, and where nothing follows it must be understood that we have no confirmation of the occurrence of the plant as stated since 1831, and in all such cases it may be held that confirmation has become desirable. "R" means recent collectors, and where it is employed implies that we have confirmation of the occurrence of the plant since 1831. The species marked R, generally but not quite invariably, are those which are mentioned in the reports of the Club as having been gathered upon the excursions. A note of admiration implies that a specimen gathered by the collector whose name is mentioned has been examined and that we endorse the name. The other letters used, T. and B., are the initials of the editors of the Catalogue, and where used imply that we have verified, not only the name of the plant, but also the locality. For the figures which relate to the altitudes attained by various species Mr. Baker is responsible where the name of no one else is mentioned. In connection with this point he desires to express his obligations to Sir Henry James, the Director of the Ordnance Survey. At the time when the information was required none of the contour ordnance maps for the higher portions of the two counties were issued; but Sir Henry James, upon application being made to him, kindly furnished from the survey records a
