winter of 1888 and 1889, tried the same method, but used six grammes
in forty-five pound blocks of lead. He obtained a relative result of--

No. 1 dynamite 1.0
Dry gun-cotton 1.37
Nitro-glycerine 2.51
Explosive gelatine 2.57
Forcite gelatine 2.7
Warm nitro-glycerine 2.7
Gunpowder 0.1

The powder gave great trouble in this case, also, by blowing out.

M. Chalon, a French engineer, obtained some years ago, with a small
mortar, firing a projectile of thirty kilos and using a charge of ten
grammes of each explosives, the following ranges:

Meters.
Blasting powder 2.6
No. 1 dynamite 31.4
Forcite of 75 per cent. N.G. 43.6
Blasting gelatine 45.0


Roux and Sarran obtained by experiments in bursting small bomb shells
the following comparative strengths of ranges:

Powder 1.0
Gun-cotton 6.5
Nitro-glycerine 10.0