Page:Popular Science Monthly Volume 88.djvu/576

 548

��Popular Science Monihly

���A tractor known to farmers as the steel mule

���A well-enclosed type of small tractor

��" ■'■■ l iilHlli I M i MI MailM' i

�� ��^H

�� �Vf^

� �im

�\

�1

�^frrrM

� �#ffm

� �'fr#//»

� �»«**»•♦.

� �»/»»»»'

���A single-drive-wheel tractor, with power lighting device for plows

�� �