| | | | | | | | | | | | | | 20 | 19| 19| 18| 17| 17| 16| 15| 14| 13| 13| 12| 11| 10| 20 ------+----+----+----+----+----+----+----+----+----+----+----+----+----+ —————— _t._ |0°.2|0°.4|0°.6|0°.8|1°.0|1°.2|1°.4|1°.6|1°.8|2°.0|2°.2|2°.4|2°.6| _t._ ======+====+====+====+====+====+====+====+====+====+====+====+====+====+====== TABLE I.——TEMPERATURE OF THE DEW-POINT, IN DEGREES FAHRENHEIT. ======+===========================================================+====== _t_ | Difference between the dry and wet thermometers (_t-t′_). | _t_ (Dry +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+(Dry ther.)| 2°.6| 2°.8| 3°.0| 3°.2| 3°.4| 3°.6| 3°.8| 4°.0| 4°.2| 4°.4|ther.) ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ -2 | -48 | | | | | | | | | | -2 -1 | -39 | -54 | | | | | | | | | -1 | | | | | | | | | | | 0 | -33 | -43 | | | | | | | | | 0 +1 | -28 | -35 | -46 | | | | | | | | +1 2 | -25 | -30 | -37 | -50 | | | | | | | 2 3 | -21 | -26 | -31 | -39 | -54 | | | | | | 3 4 | -19 | -22 | -27 | -32 | -42 | -60 | | | | | 4 | | | | | | | | | | | 5 | -16 | -19 | -23 | -28 | -34 | -45 | | | | | 5 6 | -14 | -17 | -20 | -24 | -29 | -35 | -47 | | | | 6 7 | -12 | -14 | -17 | -20 | -24 | -29 | -37 | -50 | | | 7 8 | -10 | -12 | -15 | -17 | -21 | -25 | -30 | -38 | -53 | | 8 9 | -8 | -10 | -12 | -15 | -18 | -21 | -25 | -31 | -39 | -55 | 9 | | | | | | | | | | | 10 | -6 | -8 | -10 | -12 | -15 | -18 | -21 | -26 | -31 | -40 | 10 11 | -4 | -6 | -8 | -10 | -12 | -15 | -18 | -21 | -26 | -31 | 11 12 | -2 | -4 | -6 | -8 | -10 | -12 | -15 | -18 | -21 | -26 | 12 13 | -1 | -2 | -4 | -5 | -7 | -9 | -12 | -14 | -17 | -21 | 13 14 | +1 | 0 | -2 | -3 | -5 | -7 | -9 | -11 | -14 | -17 | 14 | | | | | | | | | | | 15 | 3 | +1 | 0 | -2 | -3 | -5 | -7 | -9 | -11 | -14 | 15 16 | 4 | 3 | +2 | 0 | -1 | -3 | -4 | -6 | -8 | -10 | 16 17 | 6 | 5 | 3 | +2 | +1 | -1 | -2 | -4 | -6 | -8 | 17 18 | 7 | 6 | 5 | 4 | 2 | +1 | 0 | -2 | -3 | -5 | 18 19 | 9 | 8 | 7 | 5 | 4 | 3 | +1 | 0 | -1 | -3 | 19 | | | | | | | | | | | 20 | 10 | 9 | 8 | 7 | 6 | 5 | 3 | +2 | +1 | -1 | 20 ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------