INTRODUCTION. i 
9. A cubit, (cubitus), from the elbow to the point 
of the middle finger, or seventeen inches. 
10. An ell, (ulna, brachium), the length of the 
whole arm or four and twenty inches. 
11. A fathom, (orgya), the length of the arms 
stretched out from the tip of one middle finger te 
that of the other, or six feet, 
