Penfylvania, Philadelphia, 137 



ly the work of time, and the changes of 

 the courfe of rivers, which when the fnow 

 melts and in great floods, leave their firft 

 beds, and form new ones. 



At fome di fiance from Mr. Bartrarri^ 

 country houfe, a little brook flowed through 

 the wood, and likewife ran over a rock. 

 The attentive Mr. Bartram here {hewed 

 me feveral little cavities in the rock, and 

 we plainly faw that they muft have been 

 generated in the manner I before defcribed, 

 that is, by fuppofing a pebble to have re- 

 mained in a cleft of the rock, and to have 

 been turned round by the violence of the 

 water, till it had formed fuch a cavity in 

 the mountain. For on putting our hands 

 into one of thcfe cavities, we found that it 

 contained numerous fmall pebbles, whofe 

 furface was xjuite fmooth and round. And 

 thefe ftones we found in each of the holes. 



Mr. Bartra?n Shewed me a number of 



plants 



man ttfed to philofophy and reasoning will find, that this plan 

 gives a grand idea of the Creator, his oeconomy and ma- 

 nagement of the univerfe : and moreover, it is conformable 

 to the meaning of the words of a facred writer, who fay« : 

 Ff. civ. 29. go. Tbou hideji thy face and they (fmall and 

 great beafts) are troubled; thou takeft a-way their Breathy they die, 

 ^tnd return to their duft. Thou fendeji forth thyjpirit, they are 

 treated ; and thou renmueji the face of the earth. See Dr. 

 Hunter's, remarks on the above-mentioned teeth, in the Phi^ 

 hfofhical Tranf. Vol. Iviii. F. 



