22 TREATMENT OF SLOPING GROUNDS. 



this kind are to be found everywhere iu countries where 

 stone abounds, along paths and roads, between upper and 

 lower lawns, near the house, and along boundary lines. 

 In fact, they may be found everywhere as problems dis- 

 tinctly in sight and requiring treatment. I except of course 

 rocks that stand up in the middle of roads or paths. From 

 such places the rock must be simply removed at least two 

 feet below the surface of the ground. Many lawns turn 

 brown in summer on account of the proximity of rock to 

 the surface. 



If you will note the illustration of a charming lawn of 

 Central Park near the Webster Statue and the head of the 

 Mall, you will see how the rocks crop out of the outskirts 

 of the territory. It is in the neighborhood of these rocks, 

 where they have not been blasted away sufficiently, that the 

 first efEects of drought are felt. The lawn of the illustra- 

 tion is like a shallow bowl, beautifully modelled, and, as 

 already noted, it represents the extreme of irregularity that 

 should be given a lawn. 



Many of the rocks around it are natural, but in order to 

 supplement and complete their attractions others have been 

 set contiguous to them in such a manner as to make the 

 whole seem to be an entirely natural effect. 



Let us now turn to the illustration of the Cave in the 

 Ramble, Central Park. It is an excellent example of this 

 semi-artificial rockwork. In the first place, it should be 

 explained that the entire Cave and the hollow space around 

 it were found originally to be filled up to a high level with 

 rich mould. For the sake of the mould, all the soil was 

 carted out, leaving a great excavation not very unlike 



