160 M. CiiARBAUT on the Environs, &cc. 



fossils that exist in the environs of Lons le Saunier, and pro* 

 perly to describe the rocks bed by bed. 



The much more limited end, that I propose, will be ac- 

 complished, if this memoir may serve to dispel some errors, 

 that were entertained with regard to the geological structure 

 of these mountains, and it may, in the end, render their 

 study more easy. 



