BOOK VI. 



177 



A— Sump. B— Pipes. C— Flooring. D — Trunk. E — Perforations of trunk. 

 F — Valve. G — Spout. H— Piston-rod. I — Hand-bar of piston. K — Shoe. L — Disc 



WITH ROUND openings. M— DiSC WITH OVAL OPENINGS. N— CoVER. O— ThIS MAN IS 

 BORING LOGS AND MAKING THEM INTO PIPES. P— BoRER WITH AUGER. — WiDER BORER. 



