XXXIV 



As references have been made, in the appropriate places, 

 to most of the authorities which have been quoted, any 

 mention of them here would be superfluous ; except as 

 regards Lindley's * Vegetable Kingdom/ to which inexhaus- 

 tible treasure recourse has been too often had for it to be 

 possible to make a reference on every occasion. 



The illustrations have been mostly taken from the fol- 

 lowing works : ' Winter Sketches in Lapland,' by Sir Ar- 

 thur Brooke; Sir James Hoss's 'Antarctic Voyages'; Dr. 

 Hooker's 'Flora Antarctica/ Minders' 'Voyage to Terra 

 Australis / Von Martius's ' Nova Genera / Dr. Weddell's 

 'Histoire Naturelle des Quinquinas/ Bullock's 'Six Months 

 in Mexico / and Kittlitz's ' Vierundzwanzig Vegetations- 

 Ansichten.' The diagram of the Distribution of British 

 Flowering Plants is taken from the first volume of the 

 ' Memoirs of the Geological Survey of Great Britain / the 

 other is an adaptation of Humboldt's diagram of the ver- 

 tical regions of vegetation, to Meyen's view. The Maps have 

 been constructed from different sources. 



Descriptions of flowers have been frequently given from 

 beautiful specimens in the Fielding Herbarium at the 

 Botanic Gardens, Oxford, which contains a vast collection 

 of dried plants from all parts of the globe. Lastly, to 



