A text-book on chemistryFor the use of schools and colleges . CONDUCTION OF SOLIDS. 71 spreading through masses of explosive gas by Firj-55-calling into action the conducting power ofmetallic gauze with which the lamp-flame issurrounded, as in Fig. 55. Hemmingss safe-ty-tube, used to prevent explosions in the oxy-hyclrogen blowpipe, acts on the same princi-ple. The action of gauze is explained gn thedynamical theory of heat, as follows: in aflame, the molecular movement is very in-tense, but the weight of the moving particlesis but small. If their motion be communica-ted to a heavy body, the i
A text-book on chemistryFor the use of schools and colleges . CONDUCTION OF SOLIDS. 71 spreading through masses of explosive gas by Firj-55-calling into action the conducting power ofmetallic gauze with which the lamp-flame issurrounded, as in Fig. 55. Hemmingss safe-ty-tube, used to prevent explosions in the oxy-hyclrogen blowpipe, acts on the same princi-ple. The action of gauze is explained gn thedynamical theory of heat, as follows: in aflame, the molecular movement is very in-tense, but the weight of the moving particlesis but small. If their motion be communica-ted to a heavy body, the intensity of the mo-tion must fall, just as a light bullet shot froma, rifle could communicate to a 100-poundcannon-ball but a low velocity of motion. Inplacing a gauze over a flame, the intensity of motion isso much reduced that it is unable to propagate thecombustion to the opposite side of the gauze. Count Rumford made several experiments to determ-ine the conducting power of the materials that are usedfor clothing. He placed the bulb of a thermometer int
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