Ch ap. L of Gardening. 



C and D5 raife a Perpendicular, according to the foregoing 

 Pradice ; fet upon each of them the Length of 12 Fathom, 

 fs here, from C to E, and from D to F, and then draw, froni 

 the Point E to.F, the Line E F\ which fliali be parallel to 

 the faiiie C J). 



THE EIGHTH PRACTICE, 



draw^ with the Semi-circle^ a Line parallel to a Right 

 Line traced^out. 



Let the two parallel Lines upon the Plan (as in the fore- 

 going Pradice) be ab^ and c d^ which fuppofe diftant from FIG. YiiL 

 one another 50 Fathom, and that the Line A B were traced 

 .upon the Ground, to which a Parallel fliould be drawn at 

 thz like Diftance. From the Point C, taken at Pleafure upon the 

 Line A raife with the Inftrument a large Perpendicular, by 

 the jth Pradice ; then moving the Inftrument to the Point 

 50 Fathom diftant from the Point C, dired the Bafe towards 

 the Stake C, and^he Moveable Index being upon 90 Degrees 

 dired, by the Sights, a Stake towards E, and another, to^ 

 wards F, and trace the Line EE by the'firft or fecond Pra- 

 '^aiee, according to the Length it contains upon the Plan. 



O b SE RVATI OK. 



,Wh EN there are feveral Lines to be drawn parallel to One 

 given, there needs no more than to fet off the Diftances from 

 one to the other, either after the feventh PraiSiee, by raifing 

 Perpendiculars.at the Ends, or according to this laft, by re- 

 turning the Square with the Semi-circk, at each of the 

 Points meafur'd off upon the great Perpendicular in the 

 Middle, 



THE NINTH PRACTICE. 



^0 defcrik^ with the Line^ an Angle equal t§ an An^e 

 gi'ven upon the Paper^ 



Take upon the Plan a Length at Pleafure, as here, ef 

 ^Ight Fathonie With this Interval, upon the Point of the 



N 2 Angle 



51 



I 



