30 GAULTHERIA PROCUMBENS. 
and not opening by pores as in Pyrola. Pollen 
white. Germ roundish, depressed, five angled, 
resting on a reddish, ten toothed, glandular ring. 
Style erect, straight. Stigma simple, moist. The 
fruit is a small, five celled capsule, invested with 
the calyx, which becomes large, round, and fleshy, 
having the appearance of a bright scarlet berry. 
If the aroma or odour and also the taste of 
plants were susceptible of description in as defi- 
nite language as their proportions and form, the 
sensible qualities of many vegetables might afford 
new grounds for generalizing and combining them 
together. The aromatic flavour of the Partridge 
berry, which cannot easily be mistaken by those 
who have once tasted it, may be recognised in a 
variety of other plants, whose botanical habits are 
very dissimilar. It exists very exactly in some 
of the other species of the same genus, particu- 
larly in Gaultheria hispidula ; also in Spircea ulma- 
ria and the root of Spirwa lobata. It is particu- 
larly distinet in the bark of the Sweet birch, 
Betula lenta, one of our most useful and interest- 
ing trees. 
This taste and odour reside in a Volatile oil, 
which is easily separated by distillation. The 
essential oil of Gaultheria, which is often kept in 
our druggists’ shops, is of a pale or greenish white 
