When fire heat is first applied, the thermometer should be 55° at night, and 60° or 65° in the day; but the heat should be gradually increased as the buds begin to swell, keeping the heat at night about 10° lower than that of the day till the flower-buds appear, when the spurs are generally stopped about one bud beyond the flower-bud, and the leaf-shoots, which are opposite the flower-buds, are each stopped at a single leaf. The bunches must also be thinned, and not more than nine or ten allowed to each vine, if trained in the spur manner. The heat of the house should now be about 80° by day and 70° by night, and a little air should be given for half an hour every day, whenever it can be done without lowering the temperature below 74°. The hot-water pipes or flues should be frequently sprinkled with water when the vines are going out of flower, and the grapes beginning to swell; and the grapes in each bunch should be thinned out with a pair of scissors, and the shoulders of the bunches tied up to allow the grapes to swell. The house should now be at its greatest heat, viz. 85° by day, and 74° or 75° at night; air should be given freely, whenever it can be done without lowering the temperature below 77°; and the hot-water pipes should be sprinkled with water six or eight times during the twenty-four hours. When the fruit begins to change colour for ripening, this sprinkling should be left off, and air admitted freely, even at night, whenever it can be done without lowering the temperature too much. During the whole of the forcing, the border should be watered with dung water; and, as soon as all danger from frost is over, the leaves and straw should be thrown off, and the bed slightly forked over, to admit the warmth of the sun to penetrate the earth, and the air to reach the roots of the vines, as unless the air is allowed to reach the roots the grapes will not set well.