ZIO 



* Cmevt it 

 fowdered Vie 

 or Brick'duft, 



•f- The Foiin- 

 tam-makers 

 all it hying 

 flints in a 

 Tudding of 

 cjmenu 



The PraBice Part IL 



Inches thick, including the Pkiftering^ and inner Surface. 

 This Solid ftiould be made of fmall Flints taken out of 

 Vineyards^ and laid in Beds, with Mortar made of Lime and 

 "^Ciment^ wliich you muft not be fparing in, for this is 

 that which makes the Work good. Thefe Flints fliould 

 not lie fo as to touch one another ; on the contrary, they 

 ought to be at a little diftance, and t fwim in Mortar on 

 all fides. 



When this Solid is about eight Inches thick, and is con- 

 tinued over the whole Surface of the Bottom it muft all 

 be plaiftercd over with the fineft Mortar^ that is to fay^ 

 with Ciment well fiftcd^ before ic be tempered with the 

 Lime; which Plaiftering fliould be wrought fmooth with 

 the Trowel. This Work requires great Attendance, to 

 take out the Straws and Filth which may be met with in 

 making the Mortar ; the Proportion of which is two Thirds 

 of Ciment, or powdered Tile, to one Third of Lime. In 

 making this Mortar, a great C^antity of Water Ibould not 

 be thrown upon it^ for fear of walhing away the Goodnefs 

 of the Lime ; but it ought to be made up by Strength of 

 Arms, and good Beating. 



You fliould clioofe a warm, dry Seafon, for working Ba- 

 fons of Ciment, the Rain being very contrary to it. When 

 the Bafon is finiflied, you muft, for four or five days toge- 

 ther, anoint the Plaiftering over with Oil, or Bullocks-Blood, 

 for fear it crack and flaw i after which^ you fliould kt the 

 Water into it as foon as polTible, for fear of the drying 

 ^Winds. 



Ciment has the Property to harden fo under Water, 

 that Stone and Marble are not harder i for it makes a Bo- 

 dy fo iblid that it never decays. 



Basons of Lead are fomewhat more rarely in ufe, by 

 reafon of the great Charge of them, and the Danger of hav- 

 ing the Lead ftole. The Out- Line of thefe muft be en- 

 larged a Foot of a fide only, and the Opening fliould be 

 hollowed out half a Foot more than the Depth you would 

 give the Bafon : For Example, a Bafon of lix Fathom dia- 

 pieter fliould be dug fix Fathom and two Foot over^ and a 



Foot 



