LEVELLING, SIMPLE MODE OF. 301 



LILIUM, OR LILY. 



middle of the spirit-tube. Mark the rod 

 at the height of the cross line, and in the 

 same way the rod at the other end of the 

 walk. The two points so marked on the 

 rods at each extremity are in the same 

 horizontal line. 



" The instrument may now be removed, 

 and a rod put in its place. By placing the 

 cross line of the lozenge slide on one of 

 the points to which the level was directed, 

 and then viewing from the point at the 

 other extremity, the rod placed in the 

 middle can be marked at a point which 

 will be in a horizontal line with the other 

 two. There will then be three ascertained 

 points on the same level ; and by viewing 

 between any two, as 

 many more may be 

 marked along the 

 line as may be found 

 necessary. Thus, on 

 the rods placed be- 

 tween the two ex- 

 tremities, a series of 

 points may be mar- 

 ked, all of which 

 shall be in the same 

 horizontal line. By LOZENGE-SHAPED BOARD 

 measuring down a FOR LEVELLING. 

 uniform distance from each of these 

 points, the horizontal line which they 

 marked may be transferred to the ground 

 or to the height to which the edging is to 

 be worked. If this height be determined 

 at any place, then it is only necessary to 

 measure down to it from the level point 

 originally marked on the rod, and to the 

 same distance below each of the level, 

 points the whole edging should be formed. 



" But instead of being level, the walk 

 may be required to have a uniform slope, 

 so that one end of it shall be, say, 2 feet 

 lower than the other. In this and similar 

 cases find the horizontal level points at 

 each end as before ; then mark a foot 

 higher than the level point at the one end, 



and a foot lower at the other, and thus 

 there will be a difference of 2 feet between 

 these new points, and a straight line from 

 one to the other will have the required 

 slope." 



Lilium, or Lily (nat. onL Lilia'cese). 

 The liliums, or lilies, now in cultivation 

 are both various and- beautiful, and form a 

 class of plants which of late has been 

 largely extended, and which is really very 

 valuable both for the greenhouse and the 

 garden. The names of the principal 



WHITE LILV. 



varieties have been given in the list of 

 bulbs (see Bulbs, List of}. The different 

 kinds of lilies are so numerous that it is 

 not possible to find space here to specify 

 them, but it may be said that they are, for 

 the most part, hardy bulbous perennials, 

 and that all require very much the same 

 kind of culture. 



General Culture in-doors. Use a good 

 mellow soil, composed of equal parts of 

 leaf mould and loam, with a little peat, 

 and one-sixth of silver sand. A 1 2-inch 

 pot, with six bulbs planted in it, will 



