PREFACE. 
well as new matter concerning the old ones; and 
to incorporate the whole carteeqiy with the ancient 
stock; as far at least as is at present practicable ; 
although. occasionally from specimens not only in- 
complete, but often in a dying state, from having 
been-long and closely packed ; -whence some of the 
: descriptions are shorter than could be wished, and 
unsatisfactory ; but they may perhaps be pertmitted 
to pam und thi ior. s leisure and inereasing op- 
Leiter account 
- them, and indeed of all other known succulent 
plants, from books and every other source within 
lis reach—a Species Plantarum Succuleutarum, 
which he now. very ardently contemplates with im- 
proved locations, and the whole distributed under 
Natural Orders, and with all the i ispirovimenta of 
- the present day. 
—And here, in clodiüg this iie, dictus, 
the author expresses his most grateful thanks to ali 
lis friends, both abroad and at home, for their 
great and manifold assistances and communiea- 
tions; and he humbly requests permission to add, 
that lie will at least endeavour ta- — a conti- 
-nuation of them. 
The abbreviations i in the following y pages are the 
SET as tabe adopted in the Synopsis Plantarum 
S 7, and other publications of a similar 
nature, and an-* as heretofore, denotes a plant 
