S92 



Intelligence and Miscellaneous Articles. 



lieries in the district ; and it is to be hoped that their laudable ex- 

 ample in thus providing for the comfort and safety of the numerous 

 men in their employment will have a beneficial influence on other 

 coal-owners, whose mines are in a dangerous state from imperfect 

 ventilation. — J. Richardson, C.E. 



STRUVE'S PATENT VENTILATING APPARATUS. 



Description of the Engraving. 

 Figs. 1, 2, 3 are a plan, section and elevation of the mine ventilator. 

 A represents the upcast pit, which may be either the coal or pumping-pit. 



