. The principles of ventilation and heating and their practical application. Figure 2. Figure 1. as to connect the upper flaskwith the absorption tube;turn the stop-cock, so thatthe water will pass from theupper into the lower flask ;aspirate slowly till the colordisappears ; shut the stop-cock and read on the grad-uated flask the number ofcubic centimetres of waterrun out, and hence theamount of air passed throughthe baryta-water. Anotherinstrument, which appears tobe, upon the whole, the sim-plest and cheapest of any yetdevised for making an VENTILATION AND HEATING. 25 approximate estimate a
. The principles of ventilation and heating and their practical application. Figure 2. Figure 1. as to connect the upper flaskwith the absorption tube;turn the stop-cock, so thatthe water will pass from theupper into the lower flask ;aspirate slowly till the colordisappears ; shut the stop-cock and read on the grad-uated flask the number ofcubic centimetres of waterrun out, and hence theamount of air passed throughthe baryta-water. Anotherinstrument, which appears tobe, upon the whole, the sim-plest and cheapest of any yetdevised for making an VENTILATION AND HEATING. 25 approximate estimate as to the proportion of carbonic acid contained inair, is the one devised by Prof. Wolpert, and called by him an consists of a test-tube, marked near the bottom to show the pointto which it must be filled to contain three cubic centimetres. The bot-tom of this tube is whitened, and on the bottom is a black mark—or adate printed in black. Clear lime-water is poured in the tube to theamount of three cubic centimetres, and the air to be tested is blownthroug
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Keywords: ., bookcentury1800, bookdecade1880, booksubj, booksubjectventilation
