CHAPTEE XXIX 



LEVELLING. 



IN the carrying out of drainage operations in connection 

 with the formation of new plantations, but particularly 

 where the land is nearly level, one of the most necessary 

 implements is the spirit-level or theodolite. There are 

 many other operations, as well as in connection with draining, 

 where the level and a knowledge of its working are all- 

 important for the forester. Thus in the formation of roads 

 and paths, levelling of ground inequalities, lake and pond 

 forming, etc., the level will be found an almost indispensable 

 instrument in fact it cannot well be done without. 



V 



FIG. 1. 

 SPIK1T LEVEIi. 



Of levelling instruments there are various descriptions, 

 but the simplest of any is the ordinary spirit-level, it being 

 cheap, easily carried about in the pocket, and when erected 



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