The hour at which your vinery fire is made up for the night is quite correct. As to whether it should be made up again to any extent in the morning depends entirely on the state of the weather. To have hot pipes when the temperature can be kept up without such, is most undesirable. Generally speaking, you cannot depend on a fire made up at 4 or 6 p.m. lasting with sufficient power till 6 a.m. The true method of diminishing the amount of fire-heat is to shut up your vinery early with sun-heat, starting the fires in time to prevent the temperature from falling below the minimum at 10 or 11 p.m. A little air left on all night is beneficial, especially as the season becomes more warm.