erating as described. As soon as the reduc- put, is what the patent is granted for. This maybe tion of pressure has gone far enough, the water in the true, to a very limited extent, where the article thus small flask begins to boil. produced is a new article of manufacture ; but, gen- ‘ In many of… … The balloon already used may be borrowed, to show BALLOON IN VACUO. ACOUSTIC PARADOX. the elasticity of air. Most of its contents are expelled, whereby the desired result is obtained, and not for the and it is suspended from. a rod or sealed tube passed further, and by a little ingenuity will be…
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