Be very particular in allowing them plenty of air, especially of a night, taking care, however, to regulate this by the temperature of the weather. If there is much wind, they will of course require less air; but, at all events, it is better to give too much than otherwise, more particularly at the first ridging out, as the weather at this season being frequently subject to sudden changes, which, should it occur in the night, and the plants are too confined, or the least rankness existing in the bed, they are sure to experience material injury, which, at this time of year, it is very improbable they will ever recover; or, if with extreme difficulty, they should be brought round, they can never be expected to grow to any degree of perfection. Stir up the bed every day for a fortnight to the depth of about nine inches, with a hand-fork, and if you discover any fire-heat, immediately give water to the part affected, that being the only effectual remedy that can be applied. Be careful in forking close to the bottom of the hills, and if you ascertain that it fires much in this place, bore several holes at the bottom of the hills, and apply plenty of water. Have a sharp-pointed stick, about six or eight inches long, for the purpose of stirring the mould round the plants, in a similar manner to hoeing a crop in a garden. This will very much refresh the plants, and should be attended to while they are young, for at least two months the day after they have been watered. As soon as the roots begin to be visible through the hills, add three shovels-full of unsifted mould at a time to each hill, being very careful not to mould too freely, until the beginning of February, as the plants from the middle of December to the middle of January, lie in a dormant state; consequently, too large a quantity of mould at this season, will be attended with ill effects, in stagnating the roots, and preventing the heat of the bed rising in a free and proper manner. This being the season when plants are most exposed to injury, and are frequently lost, great care and attention is necessary for their preservation from the effects of the cold, in wrapping the linings well up, and giving a good top covering. If the weather is intense, they will require eight or nine inches covering of hay, and water only once a week.