vant- Underthe head of " heavy ordnance" your com- action of the gasses of the powder upon the metal. mittee would call attention to; three classes of guns: It is generally held by the witnesses that no effective age. The accompanying engraving represents a new im- First, those made entirely of… … BLACK'S GANG PLOW, and third, those made entirely of wrought iron. Of n a method for raising and lowering the plow so as to THE DAHLGREN GUN. the first class are the guns generally known as the increase or diminish the depth of the furrow at will. The Dahlgren gun is the invention of Rear-Ad-…
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