Special problem caused by the epigenetic alterations of Liassic rocks

"Special problem caused by the epigenetic alterations of Liassic rocks", by Henry Joly and Ninck, describes damages to the foundation of a building in Nancy due to swelling of a Jurassic shale bed. The swelling was due to the formation of calcium sulphate by chemical reaction of constituents of the shale resulting from circulation of damp air in the shale bed. Remedial measures are described.