Temperature Volume in Weight of a in degrees. cubic feet. cubic foot in lb. 32 1.000 0.0807 42 1.020 0.0791 52 1.041 0.0776 62 1.061 0.0761 72 1.082 0.0747 82 1.102 0.0733 92 1.122 0.0720 102 1.143 0.0707 112 1.163 0.0694 122 1.184 0.0682 132 1.204 0.0671 142 1.224 0.0660 152 1.245 0.0649 162 1.265 0.0638 172 1.285 0.0628 182 1.306 0.0618 192 1.326 0.0609 202 1.347 0.0600 212 1.367 0.0591 230 1.404 0.0575 250 1.444 0.0559 275 1.495 0.0540 300 1.546 0.0522 325 1.597 0.0506 350 1.648 0.0490 375 1.689 0.0477 400 1.750 0.0461 450 1.852 0.0436 500 1.954 0.0413 550 2.056 0.0384 600 2.15[1] 0.0376 650 2.260 0.0357 700 2.362 0.0338 750 2.464 0.0328 800 2.566 0.0315 850 2.668 0.0303 900 2.770 0.0292 950 2.872 0.0281 1,000 2.974 0.0268 1,100 3.177 0.0254 1,200 3.381 0.0239 1,300 3.585 0.0225 1,400 3.789 0.0213 1,500 3.993 0.0202 1,600 4.197 0.0192 1,700 4.401 0.0183 1,800 4.605 0.0175 1,900 4.809 0.0168 2,000 5.012 0.0161 2,100 5.216 0.0155 2,200 5.420 0.0149 2,300 5.624 0.0142 2,400 5.828 0.0138 2,500 6.032 0.0133 2,600 6.236 0.0130 2,700 6.440 0.0125 2,800 6.644 0.0121 2,900 6.847 0.0118 3,000 7.051 0.0114 3,100 7.255 0.0111 3,200 7.459 0.0108 [Transcribers note 1: last digit illegible] The effect of this heat of compression in increasing the volume, and the heat produced at different stages of compression, are shown by the following table: TABLE 2.--HEAT PRODUCED BY COMPRESSION OF AIR.