226 September 1749. 



the thuya, little birch-trees, wild cherry- 

 trees, and others. 



The hills near the river, on the weftern 

 lide, oppofite the ille of Orleans^ are very, 

 high and pretty fteep. They coniift, in moft 

 part, of black iime-flate. There are likewife 

 fome fpots which conlift of a rock-ftone, 

 which, at firfi: fight, looks like a fand-ftone, 

 and is compofed of grey quartz, a reddifli 

 lime-ftone, a little grey lime-ftone, and 

 fome pale grey grains of fand. Thefe parts 

 of the ftone are fmall and pretty equally 

 mixed with each other. The ftone looks 

 red, with a greyifh caff, and is very hard. 

 It lies in flrata, one above another. The 

 thicknefs of each ftratum is about jfive 

 inches. It is remarkable, that there are 

 both elevated and hollow impreflions of 

 pedinites on the furface, where one like- 

 wile meets with the petrified fhells them- 

 feives ', but on breaking the ftone, it does 

 not even contain the leaft veflige of an im- 

 preffion or petrified fhell. All the impref- 

 fions are fmall, about the length and 

 breadth of an inch. The particles of 

 quartz in the ftone ftrike fire with fleel, 

 and the particles of lime-flone efFer- 

 vef-c ftrongly with aqiia-fortis. The upper 

 and lower furfaces of the ftrata confiff of 

 lime-ftone, and the inner parts of quartz. 

 They break great quantities of this ftone 

 4 ia 



