The enerffy of cheratats is dow being krgely directed to tlicdevelopnieiit ot iniproved methodsof deatruction, and in additioii to tlie lately describcd " bellïte " raany new explosives are under trial. The French "melinite" tefcmong tliem, and is suid to be as inuch superiorto niirusrlycerinc as the latter is to conimon gunpowder. lu destructivo offects are made enpeclally terrible by tlie fact that bombe clmrged with it do not.explode for som. e little time sfter peiietrt(Bg uull or other obstwcle. In Oi-nniinv :i new slicll contaius two separatelj' barmleca subctances, wliich are forct-d together ly the striki nof li.inib, and unite with au exploriou. A BarUo inventor has produoed au cxplosive called "roburite,"' wliicb gffeotire, l)ut is daogerpiu to handle, and t deterioratcs.