f mineral wool has been given to a fibrous own ways, C, as shown in Fig. 2, leaving the hose car- formed. This filtration is difficult because at first it runs riage ready to unreel the hose. The hose being always form of blast furnace slag formed by a jet of steam blown milky through the filter.… … current of air not only keeps the inclosed We are informed that with fourteen men body cool, but drives smoke and flame away from the eyes. the machine has thrown a half inch stream 156 feet horizon- At the back the water pipe divides, one branch serving as tally, drawing water perpendicularly 12…
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