f 6 Of Re fr a&ed Sun-Dials in water.

After all this, come again to your Vessel, and with theSemicircle inlert each particular refracted Altitude into hisproper Azimuth whereto it belongeth , so shall you havepoints in each Azimuth , for so many hours as the same A-zimuth is capable off: Having then these helps, througheach point belonging (in every particular Azimuth) to thelame hour, as suppose the hour of 9 , draw one continuedcurved line, which must serve for the hour of 9 a clock,so through all the points in every Azimuth serving for 8,drawn one continued line, which must in like manner serve jfor the hour of 8 a clock; and lo do for all the rest. TheHorizontal line will be about 37 gr. below the point of theGnomon , so much, namely, as the Horizontal refractionCometh unto, and up to this Horizontal line ( and not anyhigher) must the curved hour-lines be drawn. The coastsof North and South will be opposite (in the Vessel) to thoseof the Heavens, in the lame manner here, as they are in otherDials. This work cannot be done by projecting the hourswith help of an Axis , as in other projections, for neitherthe rayes from the eye , can possibly fall upon the Water, toproject in the lame manner that the Suns beanies doe,(whichin direct projections is not requisite, but in refracted it is) northe projections made by the Suns beanies themselves, (thoughof the lame hour-circle) will be the lame in fashion, the Sunstanding in several positions to make this projection , as inone instance in a right Sphere will sufficiently appeare : Forin a right Sphere the Axis (as all know) must lye parallel tothe Horizon, or superficies of the water , and the hour of 6 ,will be the lame with the Horizontal line i If therefore wesuppose such an Axis in a round Spherick concave Vessel,full of water to be laid from one side of the Vessel to theother, and the Sun to life or set in the Equinoctial, whichis proper to the Axis, then shall the hour of 6,or the one halfof the Horizon be projected dipping down (from each point jof the Axis projected by the parallel raise of the Sun J so jmuch as the Horizontal refraction comes to ("about 37 gr..)whence it must follow that this projection of the Horizon jmust dip most under the Axis in the projected EquinoctialCircle,& nothing at all under the two ends of theAxis,which

concur with the sides of the concave Vessel, whence the Sun

being