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Scientific American, Vol. 29, No. 24 (1873) (1873)

leaf 7

An illustration from Scientific American, Vol. 29, No. 24 (1873), 1873, leaf 7
, a more perfect add 2 ounces of sulphuricacid by weight, and then } ounce derside of the plowis secured a rope, F, which runs for- elimination of fusel oil, and also that by the apparatus a of vinegar. ° The files will turn red at this point in the pro- ward in a groove in the bottom of the shovel… … ratus settles down, thereby raising the front extremity suf- A receptacle of the form shown in the engraving is pro- ficiently to break off and detach the snow in the shovel from vided with two inner diaphragms, A and B, The lower one the drift. The backing continues until a suitable point is rests…

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