Geological Surveys of Kentucky and Arkansas. 237 
of several geological members,—were astonishingly variable. — 
Here we found the soil sandy, there it was clay. To take a 
per cents, b inutest fractions. i 
ing - thirty ene bushels of wheat, _ —_ 
straw included, removes from an acre of land but 300 Ibs. 
ineral matt According to Dr. Peter's weighings on some 
