es aa 
_ Notice of Prof. De Candolle. 225 
himself have solved, but feeling that he had laid out more work 
than the longest life could suffice to execute, and anxious to com- 
plete the Prodromus, he frankly imparts his plans, his doubts, and 
his suspicions, hoping that younger and less busy laborers — 
clear sie vt one and complete the other. 
He more than once intimates his intention of Siti the 
sxibtieasion of the Physiology with other works which should 
cover the whole ground he had gone over in his lectures. In the 
preface to the Physiology, he gives the titles of those which he 
intended, if time and health and will should serve, to send forth, 
to fill up the great plan he had laid down. 'To complete the 
. fundamental portions, in addition to the two works he had al- 
ready published, he proposed to himself methodology, which 
should deduce from the study of the organs, the principles and 
methods of classification. For the principles on which this was 
to be executed he refers us to the ‘‘ Elementary Theory ;” for the 
conclusions, to the Prodromus. 
mong the accessory branches of the science, he includes, 
1. Botanical Geography, which, from the two preceding, infers 
the laws or general facts relative to the distribution of plants on 
the surface of the earth ;* 
2. Oryctological Botany, which would comprehend the history 
of fossil vegetables, considered in their relations both to the strata 
of the earth and to the forms of recent plants ; 
3. Historical Botany, exhibiting the steps by which botany 
has arrived at its present state.t 
Among the practical parts, he reckons, 
1. Agricultural Botany, the application of the principles of the 
preceding to the culture of vegetables, on which he had twice 
given a course of lectures; 
2. Medical Botany, their application to medicine ; on which 
subject he apparently meant to enlarge the work already men- 
tioned, upon the medical properties of plants; 
* On this subject he had published, in 1809, the article ‘* Botanical and Agri- 
cultural Botany,” in the Dictionnaire d’ Agriculture, and in 1820, the article ‘* Bo- 
tanical Geography,” in the Dictionnaire des Sciences Naturelles, besides the in- 
troduction to the second volume of Floré Francaise, explaining the botanical map 
of Fra 
ance. 
t The pithdle Phytography, in the Dictionnaire Classique d'Histoire Naturelle, 
contains an outline of this portion, extracted from his lectures upon the subject. 
Vol. xu, No. 2.—Jan.—March, 1842. 29 
