333 Vn. AREAS OF SPECIES. 



If our view were extended, so as to include Faroe and Iceland, a large 

 portion of the Shetland species would still be found in those sub-arctic 

 islands ; as also some others which have not been seen in Shetland, and 

 which thus apparently cease in less northern latitudes while the view 

 takes in the British islands only, apart from other countries. 



Some years ago, the writer of this volume would have found similar 

 lists for other countries of Europe exceedingly useful, as aids in his own 

 earlier examinations into planl-tiistribulion beyond the limits of Britain. 

 Indeed, he would still greet any such lists for Scandinavia or Middle 

 Europe with the greatest satisfaction. Tluit which he has himself much 

 fell the want of, in regard to the botany of other countries, he may 

 reasonably believe, will sooner or later be wanted by foreign phyto- 

 geographers, in regard to the botany of Britain. The list of areas now 

 under consideration, equally with some other lists in this volume, has 

 been framed for general as well as for local applications. It is designed 

 for the use of foreigners, as well as for the use of home botanists. But 

 for some of the uses to which the list is applicable, foreigners may 

 require none of the particulars about provinces, counties, &c. Looked 

 at in detail, ihesc are areas within areas, smaller within larger. The 

 single space or whole area, over which any species is extended in 

 Britain, may usually be ascertained for general purposes by the lines of 

 latitude alone ; those for longitude being added also where most needful. 

 By observing this facility, foreigners may use the two first divisions of 

 the list, including five-sixths of the species, with little or no attention to 

 the provincial uos. which are set after the names of the plants. 



