Page:An introduction to physiological and systematical botany (1st edition).djvu/382

 352 of each other, without any mutual communication, both conceived the idea of a regular classification of plants, by means of the parts of fructification alone, to which the very existence of Botany as a science is owing. The first of these has left us scattered hints only, in various letters, communicated to the world after his premature death in 1565; the latter published a system, founded on the fruit, except the primary division into trees and herbs, in a quarto volume printed at Florence in 1583. This work [[Author:Carl Linnaeus|Linnæus studied with great care, as appears from the many notes and marked passages in his own copy now before me. Hence he adopted his ideas of the supposed origin of the calyx, corolla, stamens, and pistils, from the outer bark, inner bark, wood and pith, which are now proved to be erroneous. In his own Classes Plantarum he has drawn out a regular plan of the System of Cæsalpinus, the chief principles of which are the following:

1. Whether the embryo be at the summit or base of the seed. 2. Whether the germen be superior or inferior.