^^ SlXOULAR ARRANGEMENT OF STRATA. 



follows the cun-ature of the strata on which it rests* Each 

 of these is very distinctly separated from that which imme- 

 diately follows it, or from the head or base of those it covers, 

 or which abut against it by a kind of saalbande of the same 

 nature as the strata, but of another colour. 

 Sfone coloured The stone of this quarry has a pretty fine grain, is ren- 

 by iron, and dered yellowish by oxide of iron, and contains a few shells. 

 shdlsl"* * ^^ There are found in it small bivalves of the chama kind, 

 crow stones or gryphites, and a few belemnites. The shelly 

 and coarse strata serve for building, the fine and hard strata 

 are used for entablatures and other ornamental parts. 



Mine counsellor Gilletl'Aumont has given such a satisfacr 

 tory explanation of the angles and tortuous bendings of cer- 

 tain veins of coal, and other alluvial strata, such as those of 

 bog iron ore near Sarre-Libre, that he seems to have caught 

 Nature in the very fact. Whether his ingenious hypothesis 

 will account for the arrangement of the strata in the quarry 

 at Chessy, I must leave to his consideration. 



X. 



Kemarks on a singular Arrangement of Strata observed in the 

 Chain ofJura.> in the Department of Daubs: by the Same*, . 



thllbfervTdon^^ ^^^^ consequence is it, some will say, whether the 

 ofl^aturc? constituent parts of our globe be arranged in this way or 

 that ? What signify to us the causes of the regularity or dis- 

 order they may exhibit, if the order of Nature as a whole be 

 not disturbed; if every thing in the universe be as it ought 

 to be ? 

 It may be ^^ doubt the abuse of observation, for every thing has its 



abused, abuse; no doubt the desire of explaining every thing, not 



excepting what exceeds the limits of our narrow comprehen- 

 sion ; have led natural philosophers into useless researches, 

 and into idle explanations, that frequently betray more va- 

 nity, than desire of being useful : but I conceive there are 



but is certainly fftcts iu geology, which it is advantageous, I will not say in 

 bi-naficiiii. 



■ * Journal des Mines, No. 106, p. 310. 



