I-XXIV. 



NOTES ON HYDRAULIC BORING APPARATUS, 



oost of the work, while the freight charges on cumbrous packages 

 are not seldom prohibitive when prospecting or other work in- 

 volving an uncertain return is being carried out. The diamond 

 drill is necessarily expensive when comparatively shallow bores 

 of from 400 to 600 feet are to be sunk, and the Calyx drill is 

 scarcely less so. A suitable outfit to be worked by unskilled 

 labour, under the guidance of one practical mechanic, would, 

 ^undoubtedly, be in large demand in the Western country, where 

 good work could be done by it ; and it cannot be too strongly 

 insisted upon that the main success of any boring machine depends 



Fig. 1. 



J 



not so much on the mechanical perfection of the apparatus, or on 

 the number of hands employed, as on the ingenuity, resourceful- 

 ness and energy of the directing mind. The value of a good 

 foreman is not to be expressed in dollars ; he may save more in 

 one hour than he receives in 12 months. 



