The PraSlice Part IL 



The Square, or whole Circle, which is an Inftrument 

 much made ufe of in Gardening, and Surveying of Land, 

 differs very much from the Squares of Mafons, and other 

 Artificers : This is a perfed Circle, cut iHto four equal 

 Parts, by two immoveable Rulers fixed to the Circumfe- 

 rence, which erofs one another at Right Angles, as may be 

 feen in the Figure. At the four Extremities of thefe Rulers,, 



and fometimes in the Center, are 

 Sights placed for raifing a Square, 

 and returning a Line at Right An- 

 gles, This Inftrument is generally 

 miade of Iron only, but would be 

 better of Brafs. "Tis mounted uponi 

 a fingle Socket without a Ball^ into- 

 which is fixM a Leg, when you 

 make ufe of it upon the Ground.. 

 This IS called a Plain Square, be- 

 caufe it has na Divifion- of Degrees 

 upon the Circle, nor no Alhidade, 

 or moveable Index : For which Rea- 

 fon there is no taking the Opening of an Angle with it ^ 

 mor is it of any other Ufe upon the Ground, than to range 

 ftrait fuch Lines as are to be continued to a great Length,, 

 and to form Riglit Angles upon any Occafion. This Defed 

 makes the Semi-circle preferred to it, which isan Inftrument 

 much more complete, and which ferves not only for the 

 taking and drawing of Plans^ but alfo for many other Ope- 

 rations in Geometry^ 



These Inftruments are carried into the Countiy very 

 conveniently in Cafes, and the Legs and Ranging-fticks are 

 tied up together in a Bundle. 



Upon the Ground we make ufe likewife of the Fathom,; 

 the Line, or fmall Cord, and of Ranging-fticks and Stakes,, 

 all which are Things fo requifite in Gardening, that one may 

 fay they are of daily Ufe, there being fcarce a Day in a Year 

 that a Gardener has not Occafion for one or other of them* 



The Fathom is a ftrait Rod of fix Foot long, the Divifioa 

 of which is marked with Imall Nails ; each Foot is divided- 

 iato 12 Inche^, the Inch into i% Iah^s^ and the Line into/ 



^^ Points^ 



