The PraBice Part IL 



THE THIRD PRACTICE. 



7^ dvefs an entire Piete of Ground^ how large foever^ and to 

 ^ lay it leveL 



FIG. III. The- Pattern-Line AB being careflilly made, according 

 to the foregoing PraiSices^ let the Stake A be confiderM as 

 immoveable^being 

 of Ufe to perform 



thefameOperation / ^ 



feveral Times^ for 

 finifliing and lay- 

 ing out the whole 

 Ground, in the fol- 

 lowing Manner. 

 On the Line AE 

 fix the Stake C,A* 

 much about the 

 fameDiftancefrom 

 the immoveable 

 Stake A^ as that of 

 D, which fhould 

 not exceed three 

 or four Foot at 

 moft. Then lay 

 the Rule, and ad- 



juft the Level upon the Stakes A and C ; and to prove the 

 Truth of this Operation, do the fame over the Stakes C and 

 P, which forms a Triangle with the two Lines A B and 

 A £, and may fatisfy you as to the Exadnefs of your Per- 

 formance. Then ftake out, by the firft Practice, the Line 

 A E ; and, by the fecond, lay it exactly level, making a Pat- 

 tern-Line of Earth. This done, place another Stake, as F, 

 about the fame Diftance from the immoveable Stake A^ as 

 the Stakes C and D were, and about three Foot likewife from 

 the Stake D. Set the Level upon this for direding the 

 - ^Line A G, proving the Truth of the Work, as was now 

 mentionM, that is to fay, by laying the Level acrofs again 



upon 



