Assertion: cannon powder | /r/CapableOf | produce about 200 vol-umes
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Source sentences:
text: Von Karolyi (Poggendorff's Annalen, Von April 1863) carried out experiments from which he estimated that, Karolyi. for small-arm powder, the gases evolved occupied about 226 times the original volume, while cannon powder produced about 200 vol-umes.