130 M. Chabbaut on the 



The second formation does not stop at this limestone, I 

 consider it as being composed of many other successive 

 stages, analogous to the first ; but as these do not exist in 

 the environs of Lons le Saunier, I shall only extend my de- 

 scription to the top of the first stage. 



Being desirous that my work should accord with that of 

 M. Brongniart, I shall only add that the second stage begins 

 to shew itself at Salins. It is composed, like the first, of 

 shelly and bituminous marls, on which rests a new and very 

 considerable mass of limestone beds.* 



The second stage forms the summit of the platform, in 

 ■which, on the S.E. of Salins, is hollowed out a valley in the 

 form ofagulf : it is seen on the left of this valley resting 

 upon the first stage ; the latter disappears on the right, the 

 former sinks in a curious manner at the cascade of Goaille ; 

 it afterwards rises, and the eye can easily follow it to above 

 Salins j there retfiains, near Fort Belin, but an inconsider- 

 able portion, resting against the top of the first stage. 



I shall describe the first under the name of gryphite lime- 

 stone formation, because that pelagian shell, which I have 

 not found in any other position, appears to me characteristic; 

 I shall call the second oolite limestone formation, because 

 that rock appears to me most characteristic of it. 



I should observe that the field of my observations being 

 but of small extent, these divisions may not be suitable; 

 generally speaking, I off'er them only as provisional in this 

 memoir, waiting until M. Brongniart has characterised these 

 rocks in a definitive maimer. 



* This next stage is probably composed of the Oxford clay and the 

 beds between it and Kimmeridge clay, such as Coral rag, &c. (TraBs.) 



