24 INTRODUCTION. 



Britannica, are here adopted with the same numerical 

 arrangement as is employed by him. His 112 Counties and 

 Yice-counties {Cyh. Brit. iii. 526 — 528) are also used. It 

 has likewise seemed desirable to give such imperfect in- 

 formation as has been obtained relative to the distribution 

 of these plants in Ireland ; 1 have therefore divided that 

 country in a similar manner. This division of Ireland was 

 first proposed in a communication read to the "Dublin Uni- 

 versity Zoological and Botanical Association," and published 

 by that body in the original (Dublin) Natural History 

 Review (vi. Pt. 2. 533), and in the Froceedings of the 

 Association (i. 246); but as those works may not everywhere 

 be easily accessible, a list of the Provinces and Counties or 

 Vice-counties of Ireland is subjoined. The numbering is 

 contimious from Mr "Watson's similar divisions {Cyhele 

 Britannica^ iii. 526). 



Provinces. 



XIX. South Atlantic. XXY. Upper Shannon. 



XX. Blackwater. XXYI. North Atlantic. 



XXI. Barrow. XXYII. North Connaught. 



XXII. Leinster Coast XXYIII. Erne. 



XXIII. Liffey and Boyne. XXIX. Donegal 



XXIY. Lower Shannon. XXX. Ulster Coast. 



Counties and Yice-counties. 



