410 PRINCIPLES OF BOTANY, ETC. 
ference from others may easily be distinguished in 
this way ; but more delicate plants, which have some 
resemblance to others will scarcely ever be distinctly 
enough represented in figures of that kind. The 
best we have are from Rudbeck, Clusius, C. Bauhin, 
and Dodonaeus. ‘The art of engraving in copper, 
became soon very important for botany. It enabled 
philosophers to make the knowledge of plants of 
more general use. ‘The neatest plates are those of 
Linné in the Hortus Cliffortianus, of Smith, Cavanilles 
and L’Heretier. Some botanists gave engravings 
like cuts, representing only the outlines of the whole 
plant. Such we have in Plumier, and the works of 
the younger Linné. To-procure plates in a still less 
expensive manner, some botanists put printer’s ink — 
upon plants, which were dried, and then’ threw off 
the impressions. Such representations dare, no 
doubt, very accurate, but the finer parts of the 
Hower are always entirely lost. The best impres- 
sions of that sort we have from Junghans and Hoppe. 
Of colooured plates those of Roxburgh, Masson, 
Smith, Sowerby, Trew, and Jacquin, are the best. 
Of a botanist we require in our times an accurate 
and thorough knowledge of all wild growing plants, 
from the largest to the smallest moss; a complete 
knowledge of all the parts of a plant, and of the bo- 
tanical terms; lastly, an intimate acquaintance with 
all the natural families of the vegetable kingdom, 
and with the properties, peculiarities, and different 
virtues of plants. In common life we give the name 
of a botanist to him, who gives us good represen- 
tations of plants, and knows to distinguish some by 
agate their 
