The Boston school compendium of natural and experimental philosophy .. (1837)
Parker, Richard Green, 1798-1869 · Boston : Marsh, Capen & Lyon · leaf 175
charger. *This substance is produced in large quantities from the corn stalk, the wholeof which, with the exception of the outside, is composed of pith. 15. What does fig. 125 represent i When will the birds rise I Why will theyrise > When will the birds fall! 16. What is the sixteenth… … 19. The thunder house, Fig. 126, is designed to show the securityafforded by lightning rods, when lightning strikes a building. (SeeFig. 126. No. 392.) This is done by placing a highly eombustibe material in the in-side of the house,and passing a chargeof electricity through it. On the floor ofthe…
Physics
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