INDEX OF THE PLATES. 



HOROLOGY. 



Efcapement, xxxi. — xxxvi. 



Rcmontoir, xli. 

 Amant's, xxxiii. 4- 

 Anchor, xxxii. 3. 

 Bennet's dead beat, xxxii. 7. 

 Berthoud's, xxxiii. i. 



for Chronometers, xxxiv. 4- 

 xxxvi. I. 

 Bethune's, xxxiii. 3. 

 Cumming's, xxxiii. 6. 

 Duplex, XXXV. 5. 

 Goodriche's, xxxvi. 3. 

 Graham's dead beat, xxxii. 4, 5. 



Horizontal, xxxii. 2. 

 Grignon's dead beat, xxxii. 6. 

 Harrifon's, xxxiii. 5. 

 Hooke's, xxxi. 8. 

 Hiiygens's, xxxi. 7. 

 Le Roy 's, xxxiii. 8. 



Improved, xxxiv. i — 3. 

 Margett's, xxxv. 3. 

 Mafley's, xxxvi. 5. 

 Mudge's, xxxiii. 7. 



for Chronometers, xxxv. i. 

 Nicliolfon's, xxxvi. 2. 

 Robins's, xxxv. 4. 

 Smeaton's, xxxiii. 2. 

 Sully's, xxxii. i. 

 Thiout's, xxxii. 8. 

 Tompion's, xxxv. 7. 

 a Virgule, xxxv. 6. 

 free, for a pendulum, xxxv. 8'. 

 Fergufoii, Mr., Clock by, xviii. 2. 

 Fordycc's Compenfating Pendulum, xl. 5. 

 Franklin, Dr., Clock by, xviii. i. 

 Fufce, Theory of, xxxvi. 6, 7. 



Engine, xxxvii. i — 8. xxxviii. 1, 2. 

 Frame, xxxviii. 3. 

 Goodriche's Efcapement, xxxvi. 3, 4. 

 Graham's Compenfating Pendulum, xxxix. 4. 

 Efcapement, dead beat, xxxii. 4, 5. 

 horizontal, xxxii. 2. 

 Grignon's Efcapement, xxxii. 6. 

 Haley's Remontoir Efcapement, xli. i — 4. 

 Hardy's Remontoir Efcapement, xli. 7. 



Compenfation Balance, xxx. 3 — j. 

 Ifochronal Compenfation, xxx. 7, 8» 

 Harrifon's Efcapement, xxxiii. 5. 

 Hooke's Efcapement, xxxi. 8. 

 Huygens's Efcapement, xxxi. 7. 

 Le Roy's Compenfating Pendulum, xxxix. 8. 



Efcapement, xxxiii. 8. xxxiv. i 3, 



Margett's Efcapement, xxxv. 3. 

 Mafley's Efcapement, xxxvi. 5. 



Rcmontoir Efcapement, xlii. 3. 

 Striking part of Clock-work, xxvi. i. 



Mendham's Remontoir Efcapement, xlii. 4 6- 



Mudge's Efcapement, xxxiii. 7. 



Time-keeper, xiii. 

 Nicholfon's Compenfating Pendulum, xl. 10. 



Efcapement, xxxvi. 2. 

 Pendulum, Troughton's, xxvii. 

 Pendulums, Compenfating, xxxix. xl. 

 Prior's Remontoir Efcapement, xlii. 7, 8. 



HOROLOGY. 



Prior's Striking part of Clock-work, xxvi. 2, 3. 

 Recordon's Renovator, xliii. i, 2. 

 Regnauld's Compenfating Pendulum, xl. 5. 

 Raid, Aftronomical Clock by, xxii. 

 Reid's Compenfating Pendulum, xl. 7. 

 Remontoir Efcapements, xli. xlii. 

 Ritchie's Compenfating Pendulum, xl. 9. 

 Robins's Efcapement, xxxv. 4. 

 Smeaton's Efcapement, xxxiii. 2. 

 Sully's Efcapement, xxxii. i. 

 Thiout's Efcapement, xxxii. 8. 

 Time Keeper, Mudge's, xiii. 

 Tompion's Efcapement, xxxv. 7. 

 Troughton's Pendulum, xxvii. 



Compenfating Pendulum, Mercurial, xl. 4. 



Rhomboidal, xl. 2. 

 Ward's Compenfating Pendulum, xl. 6. 

 Watch, with Alarum, xliv. 9 — 14. xlvi. 



Common, xliv. I — 8. 



with Mufic, xliii. 4 — 9. 



Repeating, xlv. i — 6. xlvi. xlvii. 



Rolling, xliv. 15 — 18. 



HYDRAULICS. 



Archimedes' Screw, xiv. 11 — 13. 

 Contradled Vein, i. i — 4. 

 CounterprefTure, i. 5. 

 Difcharge of Fluids, i. 6 — 17. 

 Diving Bell, Dr. Halley's, ii. 18. 

 Spalding's, ii. 20. 

 Trievs-ald's, ii. ig. 

 Machine, Klingert's, ii. 21 — 27. 

 Dredging Machine ufed on the Thames, iii. I, 2. 

 Eddy, iii.* 3. 

 Fire Engine, iii. 4. 



Newfham's, iii.* 5 — 11. 

 Rowntree's, iv. i — 6. 

 Floating, viii. i, 2. 

 Fluids, i. V. vi. 



Difcharge of, i. 6 — 17. 

 Fountain, vi. vii. 

 Hiero's Crown, viii. ^. 

 Hydromancy, viii. 3, 4. 

 Hydrometer, ix. i. 



Clark's, ix. 2, 3. 

 Defagulier's, ix. 4. 

 De Luc's, ix. 5 

 Nicholfon's, ix. 6. 

 Hydroftatic Balance, x. 7, 8. 



Defagulier's, x. 9. 

 Martin's, x. 10. 

 Hydroftatic Bellows, x. 11. 



by Fergufon, x. 12 — 14. 

 Hydroftatical Paradox, x. 15, 16. 



Inftrument, Bradford's, xii. 14. 

 Hygrometer, xii. xiii. 



Anderfon's, xii. 8. 

 Fergufon's, xii. 12. 

 Forfter's, xiii. 11. 

 Hale's, xii. 1 1. 

 Hooke's, xii. 9, 10. 

 Kater's, xiii. 12. 

 De Luc's, xiii. 5, 6. 8, 9. 



