This machine, which has been submitted to the examination of the most competent men, is composed of two tubes of thick sheet iron about three inches in diameter, and about eleven inches in length. To these two barrels are attached 120 cases made of thick cardboard, of the form and length of the Bo- man candles used in fireworks. Each of the large barrels was charged with heads of nails and pieces of iron and lead, and each case contained a ball. A second machine, similar to the former, was in course of construction, of which the police has also obtained possession.