of a circle. Again they tooke the twelfth part of this water, and considered in what time it did like∣wise run out of the same vessell, for in that they held, that the twelfth part of the circle went round, & that part of the circle to the whole circle had the same pro∣portion, as had that twelfth parte of the water to the whole water.
By this relation to the twelft part, they noted the end by some faire star, which they spied in the Horizon, whe∣ther it were North or South. By this help & means they tooke vpon them to determine, and point out the as∣censions in the Zodiake, which notwithstanding by no meanes are determinable, but so that a signe which is not risen, may seeme to be risen, and contrary a signe which is risen, may seeme to be not risen: neither will this way by water running so much further & helpe them. For both the water it selfe, and the temperature of the ayre, and things stopping the fluxe, will cause the time of the running to vary and be vnequall. For it is like, that the water will run faster in the begin∣ning, while it is cleare, then at the end, when it waxeth thicke, and muddy. For the ayre, it is like, if it be fog∣gie & thicke, it must needs hinder the running by a sort of stopping it, but if it be cleare & pure, it will helpe and further it. Againe the vessell will not run a like fast, being ful, and neere empty, but sometimes slower, sometimes faster, the celestiall motions still continu∣ing the same swiftnesse, by this meanes they notwith∣standing thought to get the true Horoscopus, and the ascending signe of the Zodiake, in which how far they were deceiued may appeare, both by that which hath bin said, and more at large in Sext. Emp. cap. contra A∣strologos.