of Terr'ace-Wal.ks^ 171 



98 you muft then fubftraft from the whole Ho- 

 rizontal of the Hill, which, as appears before, 

 is 182 Foot, 



See the Example. 



49 the Perpendicular of the Hill, 

 miiltip. by 2 the allowed Rule for the Bafe of 



a Slope, 



makes 98 as above : 



182 The whole Horizontal of theHill, 

 98 as above,being fuljftraft. from it, 



leaves 84 for the Flats of all your Terraces, 



which divided by 3 ^4 ( allows the Terrace 

 to be 28 Foot wide, which is a very good 

 Width ^ and from this Examen we find this 

 Hill may be divided by Slopes, without a 

 Wall 5 which is much cheaper, and, in 

 Truth, more beautiful 5 but this Point I (hall 

 fpeak to more by and by. 



After this preliminary Examination is over, 

 we are to proceed in dividing the Hill into 

 Slopes and Terrace-Walks 5 and, for the Ad- 

 vantage of the Work, we mufl cut three or 

 four, and fometimes five, Foot, into the Hill, 

 at the Top ^ becaufe it gives feme Advantage 

 to the Hill it felf, and the Earth is eafil/ 

 tumbled down to the Foot thereof, or to make 

 good any Deficiency in the Middle or other 

 Parts. This will readily inform us, that both 

 in the defigning and executing of this Work, 



we 



