the manual, in this department of science, as well of the 
student. as of the philosopher, had the precaution or 
wisdom to keep to genera, leaving species to shift for 
themselves ; and he has thus extricated himself from the 
labyrinth of a natural arrangement ably and usefully, with- 
out leaving either himself or his readers in the lurch. The 
hints contained in the notes, the finest parts of his work, 
still are and will long remain the sources for extending and 
enlarging the system upon the base destined for it by his 
comprehensive and sagacious mind. 
Mr. Brown, second only in his day to the above great 
name, kept to the vegetation of one region, and under the 
modest title of Prodromus Floree Nove Hollandice has pro-' 
duced a work easily convertible into an extended general 
system of vegetables. We know nothing that approaches 
the neatness, accuracy, precision and judgment shown in 
the definitions of this author ; which by experience we have 
found to comprize the justest proportioned limits that our 
mind can figure for the use of science. A surer and more 
instructive guide the student will never find in his progress 
along this fascinating path of science. : 
Classes still remain the desideratum of a natural sys- 
tem; no one has devised even a tolerable substitute for them. 
Insulated wandering orders and genera Botany teems with; 
but asylums to receive and keep these unsettled vagrants 
are still wanting, the devising of which is left to be the 
lot of an invention yet in embryo. 
The drawing was taken at Mr. Leigh’s at Bexley, where 
the shrub had been raised from seed, » 
n 2 
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