i6o Description and Use of the

to the plane of the broad paper circle, thesun is just then beginning to shine on allthose places which are in that parallel, justtouched by the edge of the broad papercircle; and will for several days seem toskim all around, and but a little above thehorizon, just as it appears to us at its setting;but with this observable difference, thatwhereas our setting sun appears in one partof the horizon only, by them it is seen inevery part thereof; from west to south,thence east to north, and so to the westagain.

Or if the latitude was given, elevate theglobe to that latitude, and on the backsideof the strong brass meridian you obtain theday of the month, then all the other re-quisites are answered as above.

As the two concentric spaces which con-tain the days of the month on the backsideof the strong brass meridian, are graduatedto strew the opposite days of the year, at3 Bo degrees distance ; when the given dayis brought to coincide with the broad papercircle, it strews when the fun begins to shineon that parallel, which is the first day of itsappearance above the horizon of that paral-lel: