BY EDGAR HAXL, F.C.S., AND HENEY G. STOKES, F.G.S. 12) 



2. Where the serpentine is traversed by diorite, dolerite or 

 granuhte dykes {and particularhj hij the last named) the veins 

 may be looked for as larger and of better quality than where 

 these dykes are absent. 



3. The best quality asbestos is found in the unaltered 

 serpentine and below the limits of atmospheric influences, i.e., 



•quality improves in depth. 



4. Chrysotile, the valuable asbestos mineral, is always 

 found with its fibres crystallized at right angles to the walls of 

 the veins. 



5. Long fibres need not be looked for, as length of fibre is 

 not so important as fineness and tenacity. Veins from f of an 

 inch up to 3 inches wide furnish all that can be desired. 



6. The mineral is usually worked from a face like ordinary 

 quarrying, and its preparation for the market involves nothing 

 beyond manual labour. 



