Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 715
c moment of turning cuts off the mercury in the tube from thatin the bulb, thereby ensuring that none but the former can be transferredinto the indicating column; E is an enlargement made in the bviud, so asto enable the mercury to pass quickly from one tube to another in revolving;and F is the… … Fig. lyi^.—The At7}iospheric Recording Instrument. enlarged portion, E, and eventually falls into the tube, F, as the instrumentresumes its original vertical position. The contrivance for turning the thermometer over at the bottom of thesea may be described as a vertical propeller, to which the…
Inventions
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