- There shall be no artificial humidification in any room of a cotton spinning or weaving factory-(a)by the use of steam during any period when the dry-bulb temperature of that room exceeds 85 degrees;(b)at any time when the wet-bulb reading of the hygrometer is higher than specified in the following Schedule in relation to the drybulb reading of the hygrometer at that time ; or as regards it drybulb reading intermediate between any two dry-bulb readings indicated consecutively in the schedule when the dry-bulb reading does not exceed the wet-bulb reading to the extent indicated in relation to the lower of these two dry-bulb readings
