uch the bor, is also given. : that, in order to obtainthe greatest amount of gas light at The lower part of the picture is occupied by a view of a shaft may be raised. The saws are placed upon the shaft at least cost, the following rules should be remembered: 1. A good number of the principal… … sired, or as the character of the land to be operated upcn Weekly. poor one will, the quantity of gas burnt being equal. 2. may require. To thecenter of the bail, attached to the saw Window Ventilation. The intensity of the light increases with, but in a greater shaft,is pivoted the end of a…
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