C.I./69 9 122 In the Hindustan Times Case(1) it is stated at p. 247: "As was pointed out in Workmen of Hindusthan Motors vs Hindusthan Motors (2), the whole purpose of dearness allowance being to neutralise a portion of the increase in the cost of living, it should ordinarily be on a sliding scale and provide for an increase on rise in the cost of living and a decrease on a fall in the cost of living." In Greaves Cotton & Co. vs Their Workmen(a), after referring to the Hindusthan Motors Case(2) and French Motor Car Co. 's Case(4), this Court laid down that the basis of fixation of wages and dearness allowance is industry cum region and observed, at p. 368: "The principle therefore which emerges from these two decisions is that in applying the industry cum region formula for fixing wage scales the Tribunal should lay stress on the industry part of the formula if there are a large number of concerns in the same region carrying on the same industry; in such a case in order that production cost may not be unequal and there may be equal competition, wages should generally be fixed on the basis of the comparable industries, namely, industries of the same kind.