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with gunpowder. , 
(7.) Perfectly pure gun-cotton, or trinitrocellulose, resists to a remark- 
able extent the destructive effects o prolonged exposure to temperatures 
ma , 
erties which have been formed by the action of nitric acid upon foreign | 
proportion affords, therefore, security to gun-cotton against any destruc 
pec of the highest temperatures to which it is likely to be exposed 
hiahee er Very exceptional climatic conditions. The onl influenc® 
oe the addition f that amount 
Sins sl i tale as an explosive would consist in a trifling # 
sligiet , Small amount of smoke attending i oa 
Mace dation of its explosion, neither of Which could be regarded i 
10.) Wake probable value of the material. 
nae A is pena aR perfect protection to eee 
stolen. exposure 
