WALKS AND DRIVES. 3!29 



the drains. The drains for walks may be made to com- 

 municate with a general system of drains. After being 

 laid, the excavations are to be filled up with stones, large 

 gravel and similar materials, to within four or six inches 

 of the top. The lower layer of stones may be set regu- 

 larly on their ends, as shown in figure 129, and if this is 

 well done, the finer stones and gravel working into the 

 chinks will cause them to bind. 



The space above the coarse material should be filled in 

 with good gravel of a size ranging from that of peas uj) 

 to that of marbles. This may be obtained by screening, 

 if gravel of the right size is not at hand. Any coarse 

 gravel that comes from screening, may go at the bottom. 

 In putting down the gravel, a little still firmer material, 

 such as sand or a sprinkling of loam, or even fine clay, 

 should be incorporated with it — all excepting a finishing 

 coat to be laid on last — to cause it to pack. The gravel 

 as it is wheeled in should be leveled with shovel and rake, 

 and then thoroughly rolled with a heavy roller, wetting 

 it freely as the rolling goes on, to aid in the packing. 

 By such a course a walk can be made that will feel almost 

 as firm to the foot as stone and be easier to walk on. 



The walk as finished should come wp to witliin half an 

 inch or an inch of the grass at the edges, and it should be 

 rounded up to be some higher in the middle, just how 

 much higher may be a matter of taste, as well as one 

 governed by the width of the walk. Straight walks are 

 not generally made as rounding as curved ones. If we 

 take an inch and a half as the average increase of 

 hight in the center for a six-foot walk — going above this 

 for serpentine walks, but a little less for straight ones, 

 the hight will not be far out of the way. On width of 

 walks and drives see Part III. 



In road making, while the geiieral material may be the 

 same as that used in walks, the proportions throughout 

 are on a heavier scale. As a rule, provision for draining 



