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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 tlie 

 labyrinth of a natural arrangement ably and usefully, with- 

 out leaving either himself or his readers in the lurch. Tlic 

 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 Prodronms Florce Novce Hollandlce has pro- 



duced a work 



dcd general 



system of vegetables. We know nothing tliat approaclies 

 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 witli ; 

 but asylums to receive and keep these unsettled vagrants 

 are still wanting, the devising of which is left io be the 



1 lot of an invention yet in embryo. 



The drawing was taken at Mr. Leigh's at Bexley, wliere 

 the shrub had been raised from seed. 



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