1. Cutting 31 2. Bordering 34 3. Widening 36 4. Drawing-out 36 5. Choking 37 6. Sealing 38 7. Blowing 39 8. Piercing 46 9. Bending 48 10. Soldering 49 IV. _Construction of Chemical and Philosophical Instruments_ 54 Adapters 55 Apparatus for various Instruments 55 Archimedes’s Screw 57 Areometers 71 Barker’s Mill 57 Barometers 58 Cistern Barometer 58 Dial Barometer 58 Syphon Barometer 59 Stop-cock Barometer 59 Compound Barometers 59 Gay-Lussac’s Barometer 60 Bunten’s Barometer 61 Barometer pierced laterally for Demonstrations 61 Bell Glasses for Experiments 61 Blowpipe 62 Capsules 63 Cartesian Devils 64 Communicating Vases 65 Cryophorus 55 Dropping Tubes 65 Fountains 66 Fountain of Circulation 66 Fountain of Compression 67 Intermitting Fountain 68 Hero’s Fountain 68 Funnels 68 Hour Glasses 70 Hydraulic Ram 70 Hydrometers 71