Of Compafi Lava. 4°5 fcurrents,found himfelf much embarrafled; “there t«' j S> f a ys he, füch uncertainty in the charafters st of cotnpäa biva, that, independently of local “ circumltances ; the rhofl: experienced eye may “ be dcceived •*.” Yet thcfe circumftances, not properly attendcd to, are thofe vyhich have feduced him into the moft palpable mitlakes. Gioeni, thöugh in many mfttuices mifled by DolomicU» yet acknowledges tha? lava, fo com- na£t as to be totally dellitütb of pores, is not found. Litholog. Vefuv. p. 85: Padre Torrc who, independently of any fyiicm, hnS canuidly and impartially examined the prödu/fts of Vcfu- vius ex prell y denies the cxiflence of lava delti- tuteof pores, none othfif büt the porous being found in currcnts of modern date f. Galcam, m bis Catalogue of the Lavns of Vefovius dräwn 110 in 1772, hardly mentions any compadt lavar. Gioeni, iri bis Catalogue, intirely omrrs this drt- tinäion; and Mr. Dolomieu acknowledges, that not a finglc fpecimcn of compadt lava is to be found in the cabinet t>f Prince Bifcari. Thofe, on the bther hand, vvho, gutded by Tyftem beftotv rhenameöf lava ön Sony malles, vvhich^hey fuppofe to have andcptly fiowed, eirher frönt real iViil lubffting, _or jmaginary ancierfc extindL 'volcahöi, find compact lavä inwely teft.- tufebf pores, vtry fearce indted" in the ■ fuppvjri currcnts frort modern, but m great fanty, m ' iofe which they aferibe to their St tuous volcano*. pw extina, äs' Well äS in the very bowcls o» tnoie thofe n'ow Vplcanos. * Ponce». I7 1 - >{• l’onces. 174. D d 3 Gioeti,