iv 
General Introduction to the Science of Botany, and the Dictionary, form sep- 
arate Treatises apart from the body of the work, and we trust they will contri- 
bute in no inconsiderable degree to its general usefulness. 
The Conductor most gratefully acknowledges the many obligations under 
which he has been already placed, by the condescension and liberality of several 
noble patrons, as well as by the assistance which he has received from some of 
the most distinguished public and private botanical establishments in Great 
Britain. » It would have — more — to him to have given expression 
to his feelings by in which he has been obliged, 
but to mention all would hho been Gives, and to make any selection invidi- 
ous. The pages of the Boranist have already borne testimony to some of the 
valuable assistance which has been supplied ; and he would add, in conclusion, 
that he is deeply sensible how greatly these marks of favour haye increased the 
claims on his best exertions. 
