1$% Hints for the Formation of 



ii. To obferve carefully the increafe or decreafe of the 

 glaciers : to determine them, in particular, by what are 

 called moraines, that is to fay, thofe heaps of ftones now or 

 formerly depofited by the glaciers on their edges and at their 

 extremities. 



ii. A. To afcertain whether there are found in the moun- 

 tains funk or petrified trees, at heights at which they would 

 not grow at prefent ; and to examine if it thence follows 

 that there may have been a time when the upper ftrata of 

 the atmofphere were warmer than they are at prefent. 



12. Caverns: if there are any, their form and dimen- 

 sions 5 the nature of their fides ; the nature and inclination 

 of their bottom; veftiges of the effects of the water by which 

 they may have been formed ; ftala&ites and incruftations, 

 foreign bodies and bones which they may contain. 



13. Whether there are found veftiges of large bafons dif- 

 pofed in ftories above each other, and which might have 

 ferved as refervoirs to different feas that afterwards might 

 have run off and united themfelves in the bafons of the pre- 

 fent feas, 



CHAP. X. 



Ohfervations to he made on the Strata of the Earth and 

 Mountains. 



I. The firft queftion is to determine whether a mountain 

 or any mafs of earth and ftone is or is not divided by ftrata*. 



2,, What, in regard to the theory of the earth, gives im- 

 portance to the queftion, whether a mountain is or is not 



* The word Jiratum, originally fynonimous with that of bed, expreffed 

 the fituation of a fubftance extended horizontally, and with an uniform 

 thicknefs, on a plain and horizontal bafe. But the fignification of this 

 yvotd has been enlarged, and it is now employed to exprefs the fituation of 

 fubftances extended with an equal or almoft equal thicknefs on bafes which, 

 are neither plain nor horizontal. Note of the Author. 



Might not the term factum be referved for thofe that are horizontal, and 

 the name of banks be given to others ? C? 



ftratified, 



