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Mentha silvestris, L. 
The Horse Mint. Europe, North Africa, temperate Asia. 
Perennial. One of the Crisp Mints is deriyed from this 
species. 
Mentha viridis, L. 
The Spear Mint. Middle and South Europe. Perennial. 
A particular sort of Crisp Mint {M. crispata, Schrad.) 
belongs to this species. 
Our native Mints, M. Australis, M. gracilis and M. sature- 
joides, E. Br., yield also oil of good flavor. M. Australis is 
far the largest and most abundant of these plants. 
Menyanthes trifoliata, E. 
Inappropriately called the Bog-hean. Europe, North and 
Middle Asia, North America. In springy and spongy hogs. 
A perennial herb of great beauty, which could he naturalized 
with facility in our Alps. The root is starchy. The whole 
plant is pervaded with a hitter principle, largely derived 
from Menyanthin. The plant is used medicinally as a tonic 
and febrifuge. 
Microseris Forsteri, J • Hooker. 
The Native Scorzonera of extra-tropical Australia and New 
Zealand. A perennial herb deserving attention, as likely 
its roots would enlarge and improve through culture. On 
the summits of our snowy mountains the plant developes 
itself most luxuriantly. The aborigines use the root for 
food. The plant would prove hardy in Middle Europe. 
Morus alba, E * . . • i 
The White Mulbovry-tree. China. This tree in several 
varieties provides the food for the ordinary Chinese Silk- 
insect {Bomhjx Mori). Silk was produced in Italy already 
600 years ago, and there this branch of industry has 
florished ever since. In China, Silk was reeled since 4500 
years. This may demonstrate the permanency of an indus- 
try, which we wish to establish here extensively under a 
similar sky. “ One pound of silk is worth its weight in 
silver, and this pound may be produced (so far as the food 
of the Bombyx is concerned) from 30 lbs. of Mulberry leaves 
