240 Address of Prof. DeCandolle 
to that of tea; and we can assert that that part of America in- 
cluded between San Francisco and the Oregon territory will, 
one day, supply wines as varied and as excellent as those Kuro- 
pean ones produced between Portugal and the Rhine. 
It is a singular fact, that the two principal beverages of the 
civilized world, wine and tea, which produce similar stimulating 
effects, but which to a certain extent are the substitutes one for 
the other in different countries, present also in the mode of cul- 
tivating them the most marked resemblances and differences. 
The vine and the tea-plant succeed best on stony, barren hill- 
sides, of which they sometimes increase the value a hundred- 
fold. According to the exposure, the soil, the cultivation and 
manner of preparing the produce, wine and tea are obtained of 
unquestionable excellence; while the neighboring crops, but a 
short distance off, may be more or less ordinary in quality. The 
two shrubs require a temperate climate, but the vine needs heat 
nd no rain during summer, while the tea-plant requires rain 
and but little summer heat; the result of which is, that these 
two species are almost geographically incompatible. Vine-grow- 
ing countries will never produce tea, and vice versd. 
ut you will say, these examples belong rather to agriculture, 
‘and concern neither botany nor gardens. I maintain the con- 
to the French colonies in America. A multitude of such in- 
stances might be named. In the present day science has pro- 
gressed, practical men avail themselves of it, governments and 
nations have abandoned those mistaken ideas in accordance with 
which it was supposed that a cultivation advantageous to one 
country othe 
was injurious to others. Hence we may hope to see, 
* 
