Sumac is largely used in tanning the liner kinds of leather, especially in the manufacture of the hard-grained moroccos and similar goods. It is also employed as the base of many colors in calico and delain printing The only trouble is in curing it properly. This must be done with all the care that is bestowed upon tobacco or hops.

Exposure, after cutting, to a heavy dew injures it, and a rainstorm detracts materially from its value. It is cut when in full leaf; and when properly dried is ground, leaves and sticks together. An acre in lull bearing will produce not less than three tons; and when fit for market, it is worth from eighty to one hundred dollars a ton. The manufacturers, as the curers are called, pay one cent a pound for it in a green state. The Commissioner of Agriculture advises to plant in rows, in order to cultivate between, either by seed or cutting of the roots. We should advise cuttings by all means, as sumac is as tenacious of life as the blackberry or horse-radish. It will never need but one planting, and the crop can be gathered any time from July to the time of frost. If it is cut later in the season, and annually, the leaves and the stocks can be ground together. If the cutting is delayed until the stock has formed into solid wood, the leaves must be stripped from the stock, and the stock is thus wasted. It is doubtful if any thing is gained in the weight of leaves after the middle of July, at which time almost every tree has completed what is called first growth for the season.