preparatio:n' for special purposes. 331 



ble silt grate on the top, placed on a level with or a little 

 lower than the bottom of the gutter. The basin maybe 

 eighteen inches or more across and three to five feet deep. 

 The pipe connecting this with the drain below, should 



start from the basin at a foot 

 and a half or more above the 

 bottom, and in this space, any 

 'Mm^^M^ gravel or other washings can 

 ' sink, to be removed occasionally 

 Fig. 132,— SECTION OF by lifting the grate away. 



MCADAM ROAD. Flgurc 132 shows a cross sec- 



tion of the true McAdam road, a road built up solid 

 with small broken stones firmly rolled. 



CHAPTER XXXV. 



PREPARATION FOR SPECIAL PURPOSES. 



As the shelter of masses of wood in breaking the 

 gales of winter, admits of our growing a much larger va- 

 riety of ornamental trees and plants, than would be possi- 

 ble without it, so too we may further enlarge the list of 

 suitable garden materials by attention to some of the 

 special wants of plants as to soil and other conditions. 



ORDII^ART BORDERS AND FLOWER BEDS. 



The soil best suited to the large majority of all flower- 

 ing plants, shrubs and trees, is one that is not too heavy, 

 is friable, deeply dug, and well enriched with decomposed 

 manure. Many failures in plant-growing come from not 

 having the beds rich enough. In making new borders or 

 preparing flower beds, the wild garden, etc., if the soil 

 was not well manured at the first, then a coat of two or 

 three inches of old and fine manure should be applied and 



