In heavy work, where the amount of stock is large compared with the amount of dressing, deductions may be made that sometimes amount to as much as 20 per cent. Rock-face work is somewhat more expensive than plain, dressed work because the projecting rock surface requires more stock; therefore, about 10 per cent. should be added. It is customary to leave stone roughly cut to shape for carving in the wall, and therefore the sculptor determines the value from the drawings and includes the cost of models, which must be approved by the architect before the work is cut. Circular work, if plain, costs about the same as square work, but if fluted or reeded, as in the case of columns, it may cost as much as 50 per cent. additional. =31.= Compared with limestone, the prices of other soft stones are as follows: COST OF FOR CUTTING STOCK PER CENT. Connecticut brownstone $1.25 20 Long Meadow brownstone 1.25 30 Portage red stone 1.05 30 Vermont or Georgia white marble 2.15 50 Pennsylvania blue marble 2.00 50 Bluestone .80 30 No definite price can be given for marble, as it comes in different grades and varieties. The prices of stock just given are for stones of common size. If extra-large or extra-long stones are required, their price per cubic foot will be greater. The cost of transportation from the quarries also influences the price of stone. This cost will vary according to the distance of the quarry from the location where the stone is to be used. The cost of hauling stone from the yard and setting it in the wall runs from 40 to 50 cents per cubic foot. =32. Granite.=—Final estimates of cut granite by the cubic foot are seldom made, although approximate estimates are often made in that way by comparing a proposed piece of work with a similar one already completed. The reason for not making final estimates is that every additional molding or break in granite work affects the cost considerably, differing greatly in this respect from soft stone.