MILLS, KILNS, MALT-HOUSES, ETC. 575 two inches in projection, to confine the water to the breast of the wheel : the same space indicates the proportionate extension of the buckets, relatively to the circumference of the wheel ; the square included in the dotted lines h h h h is to be faced or built to the depth in the wall of nine inches with Roman cement ; the dotted line i i represents the head-water line ; the parallelogram included in A i ^ h is to be built solid in Roman cement -,111 are inverted arches under the windows ; the line m m represents the top of the pavement of the race for tail-water way ; tn n is a space technically called the sweep, which is to be built of Pulborough stone (a species of green sandstone, found to resist the action of water, and which is cheaper than any other freestone in the neighbourhood of Godalming) ; is the axle of the wheel. Fig. 1 106 is the front 1106 elevation, in which the line p p represents the level of the iiead water, the wall below 'vliieh is built of stone, and the wall above of brick ; q is the main entn-uice, and r r. door l)y which corn or flour is taken up or let down by means of a crane and pulley tackle -,1111 are inverted arches, as in the preceding figure. (In these two elevations our readers will observe that there is naturally more expression than in the end view, fig. 1104, on account of the number of windows. We shall now show how this ex- pression may be increased, independently altogether of either the pilaster and architrave, or the pier and arch styles. In the first place, there is always a degree of expression given to a building when the openings are on one axis, or series of axes, both hori- zontally and vertically ; or, in other words, when all the windows and doors of the diflTerent stories are directly over one another, and when all those on the same story have their sills and lintels in the same i)lane. To be convinced that this gives expression, it is
