The vignerons of the Champagne regard the numerous stakes which support the vines as affording some protection against the white frosts of the spring. To guard against the dreaded effects of these frosts, which invariably occur between early dawn and sunrise, and the loss arising from which is estimated to amount annually to 25 per cent. some of the cultivators place heaps of hay, faggots, dead leaves, &c., about twenty yards apart, taking care to keep them moderately damp. When a frost is feared the heaps on the side of the vineyard whence the wind blows are set light to, whereupon the dense smoke which rises spreads horizontally over the vines, producing the same result as an actual cloud, intercepting the rays of the sun, warming the atmosphere, and converting the frost into dew. Among other methods adopted to shield the vines from frosts is the joining of branches of broom together in the form of a fan, and afterwards fastening them to the end of a pole, which is placed obliquely in the ground, so that the fan may incline over the vine and protect it from the sun’s rays. A single labourer can plant, it is said, as many as eight thousand of these fans in the ground in the course of a long day. Dr. Guyot’s system of roofing the vines with straw matting, to protect them alike against frost and hailstorms, is very generally followed in low situations in the Champagne, the value of the wine admitting of so considerable an expense being incurred. This matting, which is about a foot and a half in width, and in rolls of great length, is fastened either with twine or wire to the vine stakes, and it is estimated that half-a-dozen men can fix nearly 11,000 yards of it, or sufficient to roof over 2½ acres of vines, during an ordinary day. Owing to the system of cultivation by rejuvenescence, and the constant replenishing of the soil by well-compounded manures, the Champenois winegrowers entertain great hopes that their vineyards will escape the ravages of the phylloxera vastatrix. According to Dr. Plonquet of Ay they are already the prey of no less than fifteen varieties of insects, which feed upon the leaves, stalks, roots, or fruit of the vines. Between 1850 and 1860 the vineyards of Ay were devastated by the pyrale, a species of caterpillar, which feeds on the young leaves and shoots until the vine is left completely bare. The insect eventually becomes transformed into a small white butterfly, and deposits its eggs either in the crevices of the stakes or in the stalks of the vine. All the efforts made to rid the vineyards of this scourge proved ineffectual until the wet and cold weather of 1860 put a stop to the insect’s ravages. More recently it has been discovered that its attacks can be checked by sulphurous acid. [Illustration] [Illustration] V.--PREPARATION OF CHAMPAGNE.