10 Nature threatened 
;^20o,ooo. Nobody expects that such 
a profitable industry should be stopped 
solely for the preservation of natural 
monuments; but it is highly desirable 
that here and there its sphere of action 
should be restricted. The Saxon go- 
vernment has recently determined not 
to lease quarries on the bank of the 
Elbe, and also not to establish new 
ones there again. 
Not only the rocks of the moun- 
tains, but also the boulders of the 
plains are threatened by industry. 
The larger ones are worked into pil- 
lars and other objects, and the smaller 
ones into paving stones. Thus, many 
low lying districts are already deprived 
of their erratic rocks. The Sarsen 
Stones on the Marlborough Downs, 
well known as the Grey Wethers, 
were thus endangered, in consequence 
of a recent change of ownership. Steps 
were therefore taken and an appeal 
