“When one turns to the Third Schedule of the [1925] Act, it is apparent that it enumerates that type of machinery and plant which is conveniently described in the case as motive machinery; it is the machinery without which the mill could not begin to work, as, for example, the generation of power, heating and cooling, lifts and elevators, railways, tramlines and tracks, and other things, the foundation of that which was to become the work of the mill. When the machinery and plant referred to in the Third Schedule are eliminated, what is left is the kind of machinery which is concisely described in this case as process plant and machinery, operative plant and machinery, working and manufacturing plant and machinery.” “… the effect of this [1925] Act, intended to be an Act beneficial to those interested in the carrying on of industry, was to get rid of all the doctrine of enhanced value and to lay it down that what is called process plant and machinery must henceforth be disregarded where the problem is to ascertain the rateable value of the hereditament where plant and machinery are used. It is nothing to the purpose, in my opinion, to say apart from the use of the machinery and plant, there may be buildings called warehouses which for other commercial purposes do store or keep dry machinery and plant. It is not to be said that they are not to be rated because they contain machinery and plant. Of course, that could not be said. We are concerned with the rating of a hereditament which contains machinery and plant for the purpose of the carrying on of the work in that hereditament. The statute, in my opinion, makes it quite plain that in such a case and for such purposes, process plant and machinery are to be excluded.”