Plate 

 XXXIII. Fig. 



XXXIV. 



Fig. I— 

 4 



6, 



XXXV. 



Fig. 



XXXVI. 



Fi 



'g- 



XXXVII. Fig. 



XXXVIII. 



Fig. 



XXXIX. Fig. 



4— 



HOROLOGY. 



De Bethune's Efcapement 

 Amant's 

 Harrifoii's 

 Cummings's 

 Mudge's 

 Peter le Roy's 



French Efcapements for Chronometers 

 -3. Peter le Roy's improved 

 . Berthoud's detached 



improved, No. 60 

 without a Spring 

 with a Spring and Detent in 



No. 9 

 Ifochronal 

 Efcapements 

 , 2. Mudge's 

 Margett's 

 Robins's 

 Duplex 



Efcapement a Virgule 

 Tompion's 

 free, for a Pendulum 

 Efcapements, &:c. 

 Berthoud's Efcapement 

 Nicholfon's 

 4. Goodriche's 

 Mafley's 



7. Theory of the Fufee 

 -3. Fufee Engine afting by an inclined 

 Plane 

 8. Fufee Engine, with a Screw and 

 Lever 



Fufee En^nes and Fufee Frame 

 Common Fufee Engine 

 Old Fufee Engine 

 Fufee Frame 



-3. Compenfating Pendulums 

 Graham's Mercurial 

 Regnauld's 

 7. Deparcieux's 



HORSE. 



Plat 

 XXXIX. 

 XL. 



XLI. 

 XLII. 



XLIII. 

 XLIV. 



XLV. Fi£ 



XLVI. 

 XLVIL 



Fig. 8. J. le Roy's Compenfating Pendulum 



Compenfating Pendulums 

 Fig. I. EUicott's 



2. Troughton's Rhomboidal 



3. Berthoud's 



4. Troughton's Mercurial 



5. Dr. Fordyce's 



6. Ward's 



7. Reid's 



8. Doughty's 

 9- Ritchie's 



10. Nicholfon's 



Remontoir Efcapements 

 Fig. 1—4. Haley's 

 5, 6. Breguet's 

 7. Hardy's 



Remontoir Efcapements 

 Fig. I, 2. DeLafon's 

 3. Mafley's 

 4 — 6. Mendham's 

 7, 8. Prior's 

 Fig- I — 3. Recordon's Renovator 



4—9. Watch, with Mufic 

 Fig. 1—8. Common Watch 

 9 — 14. Alarum Watch 

 15—18. Rolling Watch 

 ^. 1,2. Repeating Watch 

 3. Wheel Work 

 4 — 6. Spring, &c. 

 Fig. I — 8. Repeating and Alarum Watches 



Repeating Watches 

 Fig. 1—5. Elliot's 



6. Infallible Repeater, by BerroUaj 



7. Calliper 



8. Detached Parts 



HORSE. 

 {See Miscellany, Plate XX. Jg. 7.) 



PLATES. VOL. in. 



HTDR/IULICS—NJVAL ARCHITECrURE. 



Plate 



II. Fig 



III. 



Fig. I 



2. 



Fig- 3. 



Vol. XXXIX." 



III. 



HYDRAULICS. 



Fig. 1—4. Contraaed Vein, &c. 

 5. Counterpreffure 

 6 — 17. Discharge of Fluids 



18. Dr. HaUey's Diving Bell 



19. Seftion of Trievvald's Ditto 

 20- Spalding's Ditto 

 21 — 27. lOingert's Diving Machine 



Dredging Machine ufed to deepen the 



Channel of the Thames 

 Elevation 

 Plan 

 Eddy 

 Fire Engine 



Plate 

 III.* Fig. 



IV. 



V. 



VI. 



VII. 

 VIIL 



IX. & X. 



Fig. 

 Fig. 

 Fig. 



F'g- 

 Fig. 



5— II. 

 1—6. 

 1—9. 

 1—6. 



Mr. Newfham's Fire Engine 

 Rowntree's Fire Engine 

 Fluids 

 Fluids 

 7 — 13' Fountain 

 I — 8. Fountains 

 I, 2. Floating 

 3, 4. Hydromancy 

 (Referred to as Jig. 4, 5.) 



5. Hiero's Crown 



6. Tantalus's Cup 



[Tantalus's Cup is referred to this Piatt, but in- 

 ferted Plate XIV. fg. 10.) 

 Hydrometer 

 Fig I. Common 

 2, 3. Clark's 

 4T 



