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Scientific American, Vol. 39, No. 12 (September 1878) (1878)
leaf 7
rouve is able to regulate the flow of the heat in a short circuit, and the law of which Joule has given stored-up electricity at will. By the ingenious combination POTATO DIOGEB. as follows: The quantity of heat given out in a unit of of these devices the practitioner can always regulate, accord-… … Pratique of Paris. These trials were as to pass completely beneath and not followed by success, owing to the in- WINTON'S POTATO DIGGER. partly lift up even the deepest roots. © 1878 SCIENTIFIC AMERICAN, INC.Patents · Patented · Improved · Scientific American · Boiler · Sheet metal · Secondary pile · Horse power · Patent office · American export · Trade mark · Send stamp · Export edition · Screw cutting
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