CATALOGUE. — PHILOSOPHY AND ARTS, PRACTICAL MECHANICS. 211 



On grinding. Nich. I. 131. 



Person's grindstone. Pers. Recueil. PI. 18. 



F. Cuvier on an oxid of iron. B. Soc- Phil. 



n. 67. 

 Guyton on an oxid of iron for polishing. Ph. 



M. XIV. 276. 



Made from old hats. 



Looking glasses are polished by a block, moved by a 

 crank; sometimes one glass is made to slide on another. 

 See optical instruments. 



Boring. 



Leu p. Th. Hydrot. t. 12, 25. 



Boring mills. Belidor Arch. Hydr. I. i. 321. 



Boring for coals. Morand Art d'e.\ploiter 



les mines de charbon. II. ii. 388. 

 Boring small cannon. Roz. Introd. I. 137. 

 Bailey's auger with wheelwork. Bailey's 



mach. I. 159. 

 Cook's spiral auger. Bailey's mach. I. 163. 

 Boring for coals. E. M. PI. I. Charbon de 



terre. PI. 1. 

 Boring gun barrels. E. M. PI. I. PI. 17. 

 Boring cannon. E. M. PI. I. 58. 



Old method. 



Drill with a bob or weight. E. M. PI. II. PI. 



7. f. 34. 

 Boring. E. M. A. VII. Art. Sonde. 

 Boring mill. Smeaton's reports. 

 Enc. Br. Art. Pipe borer. 

 Bailiet's borer and sounding instrument. B. 



Soc. Phil. n. 39. Nich. IV. 227. 

 Howell's patent for boring wooden pipes, 



Repert. IX. 45. 



By a hollow cylindrical borer. 



Eccleston's peat borer. S. A. XIX. 168. 



Repert. XVI. 317. Nich. 8. V. 28. 

 Poterat's boring mill approved. IM. Inst. 



IV. 

 Billingsley's patent boring machine. Repert. 



ii. II. 321. 



Digging. 



See Clearing Harboun 



Leup. Th. Hydrot. t. 7 • . . VCf/ ' '^'^^Ty 



Laplatriere, Art du tourbier. 4. R. S?^^^;^^NW 

 Digging trenches. E. iM. A. VII. Art. Sa- 



peur. 

 Cutting turf. E. M. A. Vtll. Art. Tourbe. 

 Cook's hoe. E. M. Art. Aratoire. 

 Stone quarries and lime kilns. E. M. A. I. 



Art. Carrier. 

 Macdougall's turnip hoe. S. A. XI. Frontisp. 

 Eckhardt on a machine for deepening canals. 



f. R. S. 

 Ducket's hand hoe. Board Agr. II. 424. 



Repert. XIV. 112. 

 Horse hoes. See ploughing. 



IMining, and Subterraneous Work 

 in general. 



Moray on the mines at Liege, and on blast- 

 ing rocks. Ph. ir. 166'5 ..6.1. 79, 83. 



Leup. Th. Hydrot. 



Belidor on military mining. A. P. 1756. 1. 

 184. H. 11. 



Jjcach on navigation and mines. 8. 



Coal mines. Dithamel Art du charbon nier. f. 

 Paris. Ace. A. P. 1761. H. 152. Morand 

 Art d'exploiter les mines de charbon de 

 terre. f. Paris. Ace. A. P. 1768. H. 129. 



Calvor vom Oberharze. Brunsw. 17(53. 



Ddim Anleitung zur bergbaukunst. Vienna, 

 1773. 



Coal mines. E, M. A. I. Art. Charbon mi- 

 neral. 



Bituminous coal. E. M. A. III. Art. Houijle. 



E. M. A. VIII. Art. Travaux des mines. 



White on the quarries under Paris. Manch. 

 M.II. 3G1. 



