VEHICLES, ROLLERS, HARROWS AND MARKERS. 55 



bolting the tongue across the top of the marker, for then 

 every irregularity in the walk of the horses is communi- 

 cated to the marker, making short crooks in the checks ; 

 and where the marker dips in a depression, its weight is 



Fig. 60. SERVICEABLE MARKER. 



thrown on the horses' necks. When the tongue is at- 

 tached, as shown in the cut, no short crooks are made in 

 the checks, there is neither lateral or horizontal strain on 

 the horses' shoulders, while the hoops make the marker 

 manageable in crossing deep furrows, etc. The tongue 

 is held in place by a round iron bolt passing through it 

 and the end of the diagonals. The double trees are fas- 

 tened just in front of this point of attachment. The 

 driver stands on the two boards on the rear center of the 

 marker. 



COMBINED MARKER AND CLOD-CRUSHER. 



In figure 61 is a very clear illustration of a useful 

 marker and clod-crusher, which is made as follows : 



Fig. 61. COMBINED MARKER AND CLOD CRUSHER. 



Three runners are provided, four feet long, eight inches 

 wide and two inches thick ; four two-inch planks of 

 strong, hard wood, eight feet long and eight inches wide, 



