The industries of the town include bootmaking, brewing and the production of lithographic stones.
With the exception of a few species from the Solenhofen lithographic Oolite, fossil Diptera belong to the Tertiary Period, during which the members of this order attained a high degree of development.
The Lithographic stone of Kimmeridgian age, at Solenhofen in Bavaria, is especially rich in insect remains, cyclorrhaphous Diptera appearing here for the first time.
or chalk (after the stone has been " grained "), or it is transferred from a drawing upon transfer paper in lithographic ink.
Walchi is abundant in the Oolitic lithographic slates of Bavaria.