ntion is liquid will curve downward where it meets its surface, partly in section, showing the construction and opera- worth anything, he will soon be able to increase his business and can then hold control of it himself. Asa forming part of a convex meniscus. If twosuch sur- tion of the wind gauge… … interesting one, and certainly shows an increasing use the funnel, the liquid will rise, carrying the ball with it. As it reaches the top of the tube and rises above it, it of oil where the conditions are favorable for its em- YY - : ce ployment. Perhaps the most conspicuous of the ad- forms the…
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