The Agricultural Journal of India May 1922

buff ground-colour and the black tips of the feathers of the crest on the head is found in the Himalayas (luring the summer and in the winter visits the northern half of India extending as far South as the Deccan. [...] In the case of a simple plough working in soil of uniform density the horizontal components of the forces acting on the mouldboard and on the landside may be taken as in equilibrium : then the resultants of the vertical plane forces comprising the"M T1ULA(11? [...] The centre of resistance is in the vertical line passing through the velure of gravity of the working part of the moving implement and the disturbed soil and appears to coincide with that centre of gravity. [...] if a draught adjustment is lilted the chain would he moved up to the position di the line A-- di produced passing through the centre of resistance A. When a plough is adjusted so that the line of draught passes through the centre of resistance then the ploughman has only to correct for variations in soil density a correction requiring only the occasional gentle touch of the ploughman n►m and [...] In implements of this class the centre of resistance is in the vertical line passing through the centre of gravity of the centres of gravity of each working part.