224 Notice of Prof. De Candolle 
In 1826 he had prepared for public&tion his work on the organs 
of plants,* another portion of his course of botanical lectures. 
Rich as they had become from his extensive reading, from observa- 
tion, and from the constant suggestions of his vigorous and original 
mind, it was no longer just to withhold them from the public. 
In this work on Organography, following out the hint given by 
the German poet Goéthe,} taking advantage of the light afforded 
by those who were successfully engaged in exploring the animal 
kingdom, and gathering conclusions from the immense number of 
new facts presented by other botanists, and by himself in prepar- 
ing the Prodromus, he exhibits a fuller and more philosophical 
view of vegetable structure, what had previously been given, in 
the language. 
Five years after, in 1831, he completed his great work on Veg- 
etable Physiology,{ also taken from his lectures, a rich storehouse 
of facts, upon the properties and functions of the organs of plants 
and the forces external and internal which act upon them. The 
title of Physiology he admits to be not the most proper which 
could be devised ; and he would have preferred that of Organo- 
dynamy—the dortien of the organs, as more descriptive of the sub- 
ject of his treatise.¢ 
One of the most interesting portions of this work, at least for 
‘the young philosophical student of botany, is the Appendix; 
marking out, as it does, the limits of the science in its most im- 
portant particulars, and indicating to the physiologist, the travel- 
ler, the cultivator, the chemist, and the natural philosopher, as 
well as to the botanist, to what points it is important that atten- 
tion should be directed, to advance still farther the boundaries of 
our knowledge. How many inquirers have these questions al- 
ready stimulated to action! Many of these questions he would 
Organographie on : en Raisonnée des Organes des Plantes. 
a Paris, 1827. 2 v. 
i Org, Veg. p. 8. 
+ Physiologie Végétale, ou 9 sega des Forces et des Fonctions vitales des 
Veégétaux. Paris, 3 vols. 8 
§ Aroceding: to the idea of De Candolle, vegetable physiology is but one depart- 
tag 
ly comprehended by one who is 
ig aig Principles in their other forms. Adequately to understand the 
PAAR of , must study atmospherical influences, the action of light, 
electricity and san the laws of slain the nature of soils; and whatever can 
be known of the laws of life, ; ; 
eae Fa - 
