s, and more damp, and, in summer, to cool it—somewhat as we and falls down through the grate and the descending or less in all inhabited districts. There are also the would filter, purify, and cool foul water if obliged to cold-air flue, C, and is delivered through the open- deleterious gases, the… … over 4° or 5°, merely elements are stored away. enough to keep up the cir- The most disgusting culation through the dis- LYMAN'S AIR PURIFIES. gases—the products of infecting material. putrescence—are sul- In the lower part of the apparatus, upon the wire-' bed, as shown in Fig. 1. In hot weather…
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