. Chambers's encyclopedia; a dictionary of universal knowledge for the people. rface, and it sometimes vege-tates even from the natural surface. The samefungus has been found in the berries of the Tomato(q. v.) when diseased, and on the leaves of otherplants of the natural order Solanece, but never onany plant not of that order. The starch granules which exist within the cellsof potatoes seem not to be affected by the potatodisease, but remain unaltered in quality, so that asgood potato starch is made from unsound as fromsound tubers. On occasion of the great ravages ofthe disease in 1846, how
. Chambers's encyclopedia; a dictionary of universal knowledge for the people. rface, and it sometimes vege-tates even from the natural surface. The samefungus has been found in the berries of the Tomato(q. v.) when diseased, and on the leaves of otherplants of the natural order Solanece, but never onany plant not of that order. The starch granules which exist within the cellsof potatoes seem not to be affected by the potatodisease, but remain unaltered in quality, so that asgood potato starch is made from unsound as fromsound tubers. On occasion of the great ravages ofthe disease in 1846, however, advantage was butpartially taken of this fact, partly from ignorance ofit; partly from anapprehension, ap-parently quite un-founded, that thestarch might proveunwholesome; andpartly from thewant of machineryto grate down thediseased potatoesbefore rottennesshad involved thewhole. POTATO-FLY(Anthonyia tuber-osa), a dipterousinsect of the samegenus with theBeet-fly, Cabbage-fly, Turnip-fly, & its jjcrfect state, it is very like the House-fly,about live lines Ion. Potato-fly: 1, Larva or nui^Kot, natural pize;a, Urva in^gmticd ; 3, 1 otato-fly. The male iagrayish-black, bristly, with POTCHINKY-POTENTILLA. five indistinct broad stripes on the back, and fourochrenns spots on tlie second and third segments;the female ashy-slate colour, with two indistinctochreous spots on the second abdominal maggots are very abnndant in bad jjotatoesin antinnn. and are very different from the maggotsof the House-Hy, being horny, spiny, bristly, andtawny ; the long tail ending in six long pupa is very like the larva. POTCHINKY, a district town of EuropeanJRussia, in the government of Nijni-Novgorod, 110miles south-south-east of the city of that name,and SOU miles south-east from St Petersburg. It isone of the centres of the corn-trade of the country,and exports potash. Pop. 7554. i POTEMKIX,* Gregory Alexandrovitch, themost celebrated of the Czarina Catharine
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