16 
Fig. 
XXXIV. 
Fig. 
XXXV. 
Fig. 
XXX VI. 
New Principles of Gardening. 
PROBLEM IX 
O defiribe the fame Ellipfis a different Way. 
Practice. Make a/ andmé equal tos and ¢ at Right 
Angles, as in the preceding; make /x and ay each equal 
to bb, or hm; divide xh into three equal Parts, and make 
x 2 equal to one of thofe Parts; make 4¢ equal to 42; with 
the Interval sc, on @ defcribe the Arches #¢ and ww, and on 
¢ the Arches vv and 22, interfeGting the former in gand f; 
from f, through z andc, draw the Right Lines fz 7, and 
fe 9, as alfo from the Point g the Right Line gcp, and gih, 
Onc, with the Interval ca, defcribe the Arch a0, and onz 
the Arch d/d; extend you Compafles from fto m, and on f 
deferibe the Arch omd, as alfo.on gthe Arch 044, which will 
compleat the Ellipfis as required. 
ed PROBLEM X 
“J O find the Center and two Diameters of any Eliipfis, 
Practice. Within the E//ip/s draw at Difcretion two 
parallel Right Lines, as ef and gh; bife& thefe Parallels in 
z and &, and draw the Right Line 24, which bife@ in /, the 
Center of the Eiiipfis; whereon with any Radius defcribe 2 
Circle, as mno, interfecting the E/ipfis*in p andigs join pg, 
ee = it in rand ee to , and s, which is the lon- 
gelt Dzameter ; through 4 draw ed, parallel to p 7, ti 
the lefler Diameter. "OLE F.. en Be EN 
| PROB LE pe | ae 
O deferibe an Eliipfis according to any Length “anid 
A Breadth given, without knowing the Focus Points, or 
by Segments of Circles, as by the preceding Problems. 
Practice. Let d¢ be the longeft Diameter, and ab the 
fhorteft; at the Diftance of 4d draw fi and eg parallel to 
ed, and ef and g # parallel at 24, at the Diftance of hc, cut- 
ting 
