Penfyhania, 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 diitance from Mr. Bartram $ 

 country houfe, a little brook flowed through 

 the wood, and likewife ran over a rock. 

 The attentive Mr. Bartram here fhewed 

 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, bv 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 thefe cavities, we found that it 

 contained numerous fmall pebbles, whofe 

 furface was quite fmooth and round. And 

 thefe ftones we found in each of the holes. 



Mr. Bartram (hewed me a number of 



plants 

 - 



man ufed to philofophy and reafoning 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 facrcd writer, who fays : 

 Pf. civ. 29. 30. Thou hideft thy face and they (fmall and 

 great beafts) arc troubled; thou takejl away their breathy ihey die, 

 ■and return to their dufi. Thou fendeft forth thy fpirit, they arc 

 created; and thou renewefl the face of the earth. - See Dr. 

 Hunters remarks on the above-mentioned teeth, in the P/m- 

 hjlphical Tranf. Vcl. lviii. F. 



