OF CURIOSITY. 187 
from thence we have the Sibirian nettle^ that 
ferves for making facks. If we had a more 
compleat knowledge of plants, that grow in 
the fouthern parts of Afia, and America, we 
Ihould be able to make more ample, and ufe- 
full experiments. 
To preferve our Woods we want to be pro- 
vided with quick-hedges, for which purpofe 
many kinds of trees are ferviceable, fuch as the 
gooseberry bufh , the black-thorn , the white-thorn , 
the berberry , the fea buck-thorn , the alder ^ the 
fallow , &c. provided each be planted in a pro- 
per foil, 
§. II* 
We have fome of our moft efficacious me- 
dicines, and beft: fpices from the fouthern parts 
of the world ; and were it not for the curious 
in botany they had been negle£ted as the lig- 
num colubrinum was for a long time. What 
end would it ferve to know, that the fenega root 
was good againft the bite of ferpents, unlefs 
botanifts had alfo known the plant ? And who 
would ever have dreamed, that our milk-wort 
would anfwer the fame intent ? What end 
would it have ferved, that profeffor Kalm was 
witnefs 
