Z4G MODE or DRYING MARSHES. 



is an inciilpenfab'e neceflary of life. — This I grant; yet 

 I think that the felling of the woods may l)e fo regulated 

 as to render economy and utility perfectly compatable, 

 viz. in the following manner. 



Let it be fuppofed that the N. W. and S. E. are the 

 affeclae or prevailing winds of North America ; let the 

 furveyor general mark out a tra£l of fay i oo or 200 miles 

 in a right line to be cleared of trees ; then every blafl: 

 from thelc two oppofite points will ventilate 200 miles 

 of country, bearing along the fumes of all the m.arflies, 

 while the great vi//o or avenue fkirted with wood at both 

 fides would turnilh the moft falubrious and confequently 

 valuable iituation for fettlers. 



N". XXX. 



^ Memoir on the Difcovcry of certain Bones of a ^ladni- 

 fedofthe Clawed Kind in the Wejiern Parts oj Virginii^. 

 x>j Thomas Jefferson, E/q. 



ReadMarchTN a letter of July 3d, I informed our late moft 

 10,1797- X worthy prelident that fome bones of a very 

 large animal of the clawed kind had been recently dif- 

 covered within this ftaie, and promifed a communica- 

 tion on the fubjet^t as foon as we could recover what 

 were ftill recoverable of them. It is well known that 

 the fiibftratum of the country beyond the blue Ridge is 

 a limeftone, abounding with large caverns, the earthy 

 floors of which are highly impregnated with nitre ; and 

 that the inhabitants are in the habit of extracting the 

 nitre from them. In digging the floor of one of thefe 

 caves, belonging to Frederic Cromer in the county of 

 Grcenbriar, the labourers at the depth of two or three 

 feet, came to fome bones, the fize and form of which 



befpoke 



