Chap. L of Gardening. 



o£ 12 Fathom long, and fix it by a Loop to the Stake f 

 and one of 9 Fathom, which, fix in like manner to the Stake 

 ^5 and joining their Extremities, as m drive a Stake 

 tiiere f then draw the two Lines A C and E Cy. and the Tri- 

 angle ^ C JS- fliall be like that of the Pkm- 



The F I r sir O'bs e r rAT i-oir^ 



If the Triangle had the three Sides equat, which we call^ 

 Equilateral, you need only take two Lines of equal Length, 

 with the Bale,, at^ the Extremities of whicb, having twa^ 

 Stakes run: through- the Loops, and joining the Ends of thcfe 

 Lines together above,, you plant a Stake, where they inter.- 

 andtnee the two Lines,^ as- before,. 



The Secokd Observ ati o-n^. 



If the Triangle fiiould be fo-^ large tltxt itv could^' n©t ■ be; 

 ©onveniently drawn, with the Line, you mufl: thea^rtieafure 

 ©ne of its Angles, as that of fi,. \\rith the P'rotra^lor, whichs 

 fuppofe 50 Degrees^ and the Side ^ii? 100 Eathomy and ac: 

 120 Fathom- After having drawn- upon the Ground "^ the. 

 hint A B 100 Fathom, „ by the fecond Pradliee, place the Fl«5; xr;. 

 Semi-circle on the Point directing its Bafe to the Point 

 and letting the Index to 5 0 Degrees,, you diredt the Stake G^. 

 to 120 Fathom diftant from the Staked',- after which, froiru; 

 the Stake C to that of B, you draw the Line CF, which^^ 

 uath the Lines B C and. A B^ form,the Triangle demanded^ 



TH:E TWELFTH PRACTICED. 



To draw an. oMbTig Sqttare^^ or Parallelogram* 



After having -meafured the Length'' ^r^^ and the Breadtfe 

 ^ c of the Parallelogram defcribed upon the Paper,, and quo- 

 ted them, as fuppofe 8 and 15 Fathom, trace out the Line: 

 A S of 15 Fathom, and upon one of its Extremities, as Ay, 

 raife a Perpendicular of 8 Fathom long- as from^^ to-C, by ^T G. xit, 

 the fixth Practice. Then fix a Line of 15. Fathom long to the 

 Stake C;, and one of 8 Fathom ta the Stake S^ , and where -^^^^^"1- 



