sured by the space explored , and too quickly accom- 

 plished, if regard be had to the interest attached to the 

 localities. Turned always towards the south, I did 

 not stop till I reached Madeira and the Canaries, has- 

 tily collecting on the way such objects as the season 

 offered . Much therefore is left undone in these rich 

 fields of Flora, in which , notwithstanding the gleanings 

 of learned men from Clusius to Bory de Saint- Vincent, 

 the labourers have been too few for the abundance of 

 the harvest. Since then M. Rambur a zealous zoolo- 

 gist and author of a Fauna of Andalusia has brought 

 with him from the same country a valuable collection 

 of plants a part of which owing to his kindness , and 

 that of M, Decaisne , I have been enabled to examine. 

 M. Edmond Boissier of Geneva last of all in 1837 has 

 carefully explored the whole kingdom of Grenada, and 

 the botanical world will in a short time profit by the 

 results of his interesting investigations, concerning 

 which a short notice has already appeared in the Bi- 

 bliotheque universelle of Geneva, and the composite in 

 theProdromus of Professor de Candolle. As soon as 

 1 received these works I changed the names which I 

 had previously given to many of the species therein 

 described. 



Other pursuits and various accessory causes have 

 retarded the study of my Spanish herbarium , and it was 

 only towards the end of 1837 that I began to select 

 from it the species which appeared altogether undescri- 

 bed, and such as seemed to need further illustration. 

 The drawings and plates of many of these are already 

 finished , but as this is a work of much outlay both of 

 money and time , 1 have followed the example of many 



