262 



FKLLING AND CONVERSION, 



Fig. 133. 



bore-bole, wbich sbould be of suitable bore to admit it, and 

 rammed bome witb a wooden ram-rod. A smaller cartrid^'e (z) 

 is used in connection witb a fuse for 

 firinji: tbe cbarge, tbe end of tbe fuse 

 being placed on tbe soft mass of dyna- 

 mite of tbis cartridge, and tied firmly 

 above it in tbe paper covering of tbe 

 latter. Tbis firing-cartridge and fuse 

 is tben let down on to tbe blasting 

 cartridge in tbe bore-bole. Tbe vacant 

 space in tbe bore-bole is tben tamped 

 witb eartb and tbe fuse ligbted. 



Wbilst l)lasting witb powder fre- 

 quently only cracks tbe stump, by tbo 

 use of dj-namite it may be torn into 

 several pieces. 



As regards tbe cost and saving of 

 labour by blasting tbe stump, various 

 estimates representing from 30 to 50 

 per cent, labour saved bave been made; 

 for oak-stumps tbe cost is estimated 

 at C)d. per stacked cubic meter cbeaper 

 tban manual labour, and for Scotcb-pine at 'dd. more. 



Dynamite can be used witb advantage only on completely up- 

 rooted stumps, for it lias scarcely any etiect on tbose still in tbe 

 ground. 



Owing to its bigbly explosive nature, dynamite will not be 

 mucb used for blasting stumps in forests, at any rate during 

 winter ; also on account of its bigb price and because it is a 

 strong poison. 



Tbe use of l)lusting powder can, bowevcr, be strongly I'ecom- 

 mended for tbis purpose wherever tbe price of labour is bigb, 

 and stumps bave to be split. 



(f) Preparation of Faggots. 



Wberever twigs and brancbes are in demand for fuel, tbey arc 

 cut into lengtbs witb tbe bill-book, and bound into faggots, or 

 bavins, bv means of one or two withes or binders. 



