. 111 ACCO' 1 Hi IS 



It may be carried ase or pocket hung 



from the waist-belt, on >c body oppo 



the hammer. ; and 



of rocks, the :r< nd of dislocations and dyke*, the 



>f boundaries, escarpments, and other geological 



features are observed accurately, and noted on the spot 



time of observation, cither \\\m the map or in the 

 note-book. A convenient instrui ii^ht and 



s or reconnaissances, combines the compass and 

 the next instrument I have to describe the clinometer. 

 I shall refer to it again. 



i. . 



5. The Clinometer^ or dip-measurer, is employed to find 

 the angle sj strata are placed to the horizon an 



important ODM n the investigation of the geo- 



logical structure of a country, and one having frequently 

 a special economic value, as, for inst. 

 out the depth to which a well or UK be sunk. 



Various patterns have been proposed and used for this 

 instrument Formerly a spirit-level was commonly 



no doubt for purposes of extreme ac< 

 desirable. But apart from the difficulty of 

 the requirements ot" the field, the 



