proper re- Signal Service, the average velocity of the wind within the other pencil. The adhesion is strong enough to course for rescuing an intermitting power from this the range of its record is nine miles per hour for the admit of moving the pencilsabout. (2) Clean a cop- difficulty, and thus… … ballast. Upon the other end of the cork is fastened a The following words of the late Dr. ‘Richardson frame, which consists of a fine iron wire ring 3 inches should be ever kept in mind: ‘‘Cleanliness covers the Fig. 4.-FLOATING AND SUBMERGED RINGS. in diameter, and two pieces of the same wire are…
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