1652 AGRICULTURAI, MACHINERY AND IMPLEMENTS 



at will either furrows 12 inches broad and 8 inches deep or 16 inches broad 

 and 12 inches deep. 



Other recent improvements tend to facilitate the manijnilation at the 

 headlands; in the system Falkekberger (i) the two bodies turn si- 

 multaneously around a horiz.ontal axis, the rotation being caused by the 

 reaction of the ground on the moving body through the agency of a stop. 

 The " Syracuse Reversible " plough has two boviies mounted on separate 

 beams, one turning the furrows to the right, the other to the left; the share 

 is lifted by a pedal or by a spring mounted on a lever which transmits the 

 task of lifting the share to the team, leaving the driver free to steer the team 



Fig. 3. — GiLTLR plrmgh with automatic lift. 



at the turns. The other share turns automatically and the whipple-trees 

 come into place by sliding to the end of a hake, so that the machine 

 follows the line of traction. 



In order to lift at the headland in some types of multi-furrow ploughs, 

 the tractor driver has only to clutch a cam-shaft when all the shares are 

 successively lifted. The power reqtiired is thits small and the headland is 

 not left in a saw-tooth pattern which reduces the tilth. The writer also de- 

 scribes the « Leviathan >- drain-plough (already noticed and illustrated in 

 Bulletin 1915, N.o 1329), exhibited at the vSmithfield show (London) De- 

 cember 1915 b}' Messrs Maclaren. 



1207 - Simple Method of Calculating the Cost of Mechanical Cultivation. — de 



FoNTGALLAND A. (Correspondent) in Comptcs Kendus dcs saiiict-s dc V Academic d'Agri- 

 cultiire de France, Vol. II, No. 28. Paris, July in, iqi6. 



An easy method of finding' the cost nf work to be paid by each member 

 of the organisations for mechanical cultivation is very desirable, p^x- 

 perience of motor-ploughing shows that the i^etrol consumption (and hence 



(i)Seei?. 191 5, No. 420. 



