stonishing." at a cloth target four feet square, fastened on a board Mcj.2 To remedy these difficulties, both Mr. Neilson, at Calder frame eight feet square. The shots varied from the cen- m-—« and elsewhere, and Mr. Firmstone, at the Lays, proceeded ter, from three and a half inches to four feet,… … tant), and 19 shots fired. Five of these entered the much increased, that one oven like that shown in Figs. In the annexed engraving, Fig. 1 represents a perspec- board at from three and a half to four feet of the center. 6 and 7 was found to be capable of heating the blast for tive view of the…
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