Plants 
19 
example, in the provinces of Schleswig 
Holstein, Brandenburg, and Posen, the 
tree is quite extinct. 
The lily of the valley (Convallaria 
majalis) is also endangered by dealers. 
In a village near the Vistula, a man ap- 
plied for leave of absence from school 
for his eleven children in order that 
they might gather the lily of the 
valley in a neighbouring wood. In 
the isle of Riigen, during the spring 
of 1898, 3,400 kg of this plant were 
gathered, and exported chiefly to Ber- 
lin. In this way the plant is becoming 
rare here and there, and thus it is that 
a charming memento of the woods is 
dying out. In certain of the Derby- 
shire dales, in England, the lily of 
the valley has been almost extermi- 
nated. 
The Lady's slipper orchid (Cypri- 
pedium Calceolus), one of the most 
beautiful members of the European 
2 — 2 
