Kirchner states that the humidity of curing-rooms should not, in general, go below 80' or above 95°. Temperatures from 50°-70° F. are preferable in the curing-room. The following temperatures and percentages of humidity are recommended by Martiny: In the interior of our continent it is somewhat difficult to obtain as much moisture in the air of curing-rooms as is represented by the preceding figures; the relative humidity of ordinary curing-rooms in this region, therefore, but rarely goes over 60°. A higher degree of humidity may be obtained by hanging wet sheets of canvas in the curingroom (Decker), or by similar devices, as described in the thirteenth ann. report of Wis. Experiment Station. Self-recording thermometers are to be recommended for use in curing-rooms. For observation of relative humidity a wet and dry bulb thermometer, a Mittchoff's hygrometer, or a Lambrecht's polymeter may be used to advantage. Any of these instruments may be obtained through dealers in chemical glassware or dairy supplies; the prices range from $8 to $30. TABLE SHOWING THE RELATIVE HUMIDITY IN THE AIR OF CURING-ROOMS. (KING.) DIRECTIONS.-Notice that the table is in three column sections. Find air temperature in first column, then find wet-bulb temperature in second column, same division. In third column opposite this is relative humidity. Example.-Air temperature is 50°, in first column; wet-bulb is 44°, in second column, same division. Opposite 44° is 61, which is the per cent of saturation, or the relative humidity of the air. Caution.-Fan the bulb briskly for a minute or two before taking reading. |