to the feed line 3 if the measured temperature of the discharging mixture however is too low then the control member 23 operates the valve 15 to reduce the amount of air causing an increase of the partial pressure of and therefore of the condensation temperature and of the temperature of the discharging mixture both of the control methods indicated above are beneficially used in the manufacture of thermal paper which is often better produced using low drying cylinder temperatures but they can be used for manufacturing any type of paper the methods are also beneficial for use on the earlier cylinders along the web path of a drying section where reduced temperatures may avoid heat shocking the web for more completeness other elements of the drying cylinder are now described although they are not directly tied to the methods above described or to the elements which perform the methods the steam air gas and condensate mixture from the discharge line 19 passes through a separator 42 which includes a condensate collection area 43 and a steam and gas chamber 44 above condensate is collected from outlet line 45 for likely reuse steam from chamber 44 passes through line 46 and through condenser 47 wherein the cooling coil 48 condenses the remaining steam the resulting condensate is returned to separator 42 through line 49 the temperature of coil 48 is set by the valve 51 which controls coolant flow air and gases continuously passing out the discharge line 19 and which.