Registration 37 
be dealt with in a similar way. In 
Germany, the soil, and the fossil and 
recent vegetable and animal worlds 
have not everywhere been thoroughly 
investigated ; therefore these investi- 
gations must be made anew here and 
there. In these inventories, the geo- 
graphical, geological, botanical, and 
zoological rarities ought to be regis- 
tered, not in systematic order, but 
according to the administrative districts 
and the ownership of the different 
localities. Thus, from the inventory, 
it would be easy to determine what 
monuments of nature exist and ought 
to be preserved in a given district. 
Moreover, it is highly desirable that 
reproductions of some kind should be 
made, especially of those monuments 
of nature which it is not possible to 
preserve intact. 
Further, the natural monuments 
should be mapped out. Many natural 
