MARKERS 



35 



A marker may often be combined with the 

 roller to good advantage, as in Fig. 33. Ropes 



38. Hand sled-marker. 



are secured about the cylinder at proper inter- 

 vals, and these mark the rows. Knots may be 



39. Trailing sled-marker. 



placed in the ropes to indicate the places where 

 plants are to be set or seeds dropped. An exten- 

 sion of the same idea is seen in Fig. 34, which 



