In the preceding chapter we left the newly-expressed must flowing direct from the press into capacious reservoirs, whence it is drawn off into large vats, where it clears itself by depositing its mucous lees, usually within twenty-four hours. It is then transferred to new or perfectly clean casks, holding some forty gallons each, in which a sulphur match has been previously burnt. These casks are not filled quite up to the bunghole, which is generally covered with a vine-leaf kept in its place by a piece of tile. The bulk of the newly-made wine is left to repose at the vendangeoirs until the commencement of the following year; still, when the vintage is over, numbers of long narrow carts laden with casks of newly-expressed must may be seen rolling along the dusty highways, bound for those towns and villages in the department of the Marne where the manufacture of Champagne is carried on, and where the leading firms have their establishments. Chief amongst these is the cathedral city of Reims, after which comes the rising town of Epernay, stretching to the very verge of the river; then Ay, nestling between the vine-clad slopes and the Marne canal, with the neighbouring village of Mareuil; next Pierry; and finally Avize, in the centre of the white-grape district southwards of Epernay. Châlons, owing to its distance from the vineyards, does not usually draw its supply of wine until the new year. In the vast celliers of the manufacturers' establishments, where a temperature of about 60 to 70 degrees Fahrenheit usually prevails, the wine undergoes its first fermentation, entailing a loss of about 7-1/2 per cent, and lasting from a fortnight to a month, according as to whether the wine be _mou_--that is, rich in sugar--or the reverse. In the former case fermentation naturally lasts much longer than when the wine is _vert_ or green. This active fermentation is converted into latent fermentation by transferring the wine to a cooler cellar, as it is essential it should retain a certain proportion of its natural saccharine to insure its future effervescence. The casks have previously been completely filled, and their bungholes tightly stopped, a necessary precaution to guard the wine from absorbing oxygen, the effect of which would be to turn it yellow, and cause it to lose some of its lightness and perfume. After being racked and fined--an operation generally performed about the third week in December--the produce of the different vineyards is ready for mixing together in accordance with the traditional theories of the various manufacturers; and should the vintage have been an indifferent one, a certain proportion of old reserved wine of a good year enters into the blend.