but has a number of fmall pores, which t%-^ 

 ternally appear to be covered with a pale 

 grey cruft. They are from an inch to an 

 inch and a half in diameter. 



Amongst fome other kinds of fand, 

 U'hich are found on the fhores of lake 

 Champlain, two were very peculiar, and 

 commonly lay in the fame place \ the one 

 "Was black, and the other reddilli brown, 

 or granite coloured. 



The black fand always lies uppermoft* 

 conlifts of very fine grains, which, when 

 examined by a microfcope, appear to have a 

 dark blue colour, like that of a fmooth 

 iron, not attacked by ruft. Some grains 

 8re roundilh, but mofl of them angularj 

 with iliining furfaces -, and they fparkle 

 when the fun fhines. All the grains of 

 this fand without exception are attra(fled 

 by the magnet. Amongft thefe black or 

 deep blue grains, they meet with a few 

 grainsofa red or garnet coloured fand, which 

 is the fame with the red fand which lies 

 immediately under it, and which I fhall 

 now defcribe. This red or garnet coloured 

 fand is very fine, but not fo fine as the 

 black fand. Its grains not only participate 

 of the colour of garnets, but they are really 

 nothing but pounded garnets. Some grains 

 aie round, others angulated ; all lliine and 



ar€ 



