CURE OF THE DRY ROT, 315 



portation of cylinders, pipes, &c. to many parts of Europe 

 and America. At Liege, and in the Netherlands, they ufed one of pieces 

 to have their cylinders from England; but, being very ex- "^J^^^^ ^' 

 penfive from the duties and carriage, 85c. the induftrious 

 PoflTon, at Liege, with his fmall foundry, found means to 

 make cylinders of three pieces fcrewed together, which he 

 bored, and made them ferve as well as if tiiey were of one 

 piece. I have feen one work as well as can be defired. 



In 1752, Montieur Rivatz, a Swifs gentleman, made aRIvatz, 175*, 

 fire-engine on Savery's principles for the Chevalier Nugue, 

 at Nogent fur Marne, two leagues from Paris ; the apparatus 

 to make the engine work itfelf was of his invention, and per- 

 formed very well; his boiler, however, being out of propor- 

 tion, the man who attended the work was much hurt by the 

 explofion of the fleam, which difcredited the machine, though 

 well contrived in every part except the boiler. 



f}^ Next follows the Account of the Author's own Works. 



XXIL 



Obfervations and Communications on the Dry Rot in Timber, 

 made to the Society for Encouragement of Arts*. 



jL he mifchief arifing in buildings from that decay of the Introduftory re- 

 timber and wood-work, known in general by the name of the ^^^^l^ Jf ^^^^ 

 Dry Rot, has been, and yet continues fo great, as to demand 

 every attention for its prevention. In the Xllth Volume of 

 the Tranfa6iions of the Society of Arts, publiflied in the year 

 1794, will be found fome valuable fads, furniflied by Robert Robert Batfon, 

 Batfon, Efq. of Limehoufe, refpeding the methods he took to of "Ju^n' X^d°.^ 

 prevent this evil, in one of his rooms greatly affeded by it. rot. 

 The plan he adopted was, to charr the ends of his timbers, to 

 take away the infected earth to the depth of two feet, and to 

 fill up that fpace with anchor-fmiths* aflies, or aflies from a foun- 

 dry, before his flooring-boards were laid. On the 15th of May, 

 1794-, which was upwards of fix years after the flooring was 

 laid, as above mentioned, a minute examination of the boards, 

 wainfcot, and timbers, was made in the prefence of a Com- 



* Ex traced from their Tranfaaions, Vol. XXI. 



mittee 



