MECHANICS. 



Plate 

 II. Fig 5, 6. Barton's Lamp 



7, 8. Porter's Automaton Lamp 



LATHE. 

 Fig. I — 10. Mr. H. Maudflay's Lathe 



LIGHT. 



Fig. I — 19. Luminous Animals 



{See Plates, Vol. V. Natural History) 



LIGHT-HOUSE. 



Fig. I — 8. Light-Houfe on the Eddyflone 

 Rock 



MAGNETISM. 



I. Fig. I — 12. Compafs 

 II. Fig. 13 — 16. Ditto 

 III. Fig. 17 — 22. Variation Compafs 

 IV. Fig. 22 — 29. Dipping 



{For Jig. 21. fee P/nteV.) 



30. Dipping Needle, by Lorimer 

 [ Referred to as jig. 3.) 

 V. Dipping Needle, by Nairne, on Mr. 



Mitchel's Plan 

 VI. VII. Fig. I — 12. Magnet 

 (VII.) Fig. I. Ditto 



(VI. y VII./^. I. are on one Plate) 

 VII. Fig. 2 — 16. Magnet 



MAMMALIA. 



{See above. Anatomy, Comparative; alfo, 

 Plates, Vol. V. Natural History) 



MECHANICS. 



Plate 

 II. 



MASONRY. 



I. Fig 



11. 



Reticulated 

 Incertain 

 Ifodomum 

 Pfeudifodomum 

 Roman Emplection 

 Greek EmpleAion 

 Arches 



Fig. I. No. I. Piano Cylindroidic Arch 

 No. 2. Piano Cylindric Arch 

 No. 1 . Cylindro-Cylindric Arch 

 No. 2. Cyhndro-Cylindroidic 



3- 

 4- 

 5- 

 6. 



2. 



MAST, Plate of. 

 (5« Ships, PlateVlll.) 



MECHANICS. 



Fig. I, 2. Acceleration 

 3. Angular Motion 



{See Plate ll.fg. i.) 



3, 4. Angle of Elevation 

 5 — 7. Axis in Peritrochio 



Fig. 8 — II. Balance 



12. Bent Lever Balance 



13. Aflay Balance 



14. Ballaft 



{On this figure, the dotted line perpendicular to the 

 line I — ■Xi-Jhould have the letter n at the upper end 

 and c at the bottom ; and g fljould be on the dot- 

 line oppnfite to G ) 

 II. Fig. I. Angular Motion 



2 — 4. Boring Water Pipes 

 ( Referred to as Jig. 67 — 69. ) 



5. Crab for launching Ships 

 {Referred to as Plate XVIII. Jg. I.) 



6, 7. Double Cylinder 

 {Referred to as Plate XXU. fg. I, 2.) 



8, 9. Jack for raifing Timber 

 {Referred to as Plate XXX. Jg. 1,2.) 



10. Smoke Jack 

 {Referred to as Plate XXX. Jg. 3.) 



II — 13. Lever 

 {Referred to as Plate XXX. Jg. 4—6-) 



14 — 17. Projeftiles 

 {Referred to as Plate XXXVI. Jg. 7— 

 10.) 

 III. Fig. 15. Capftan, Common Moveable 



16. Double 



17. ufed at the London Docks 



18. Main, or double 



19. Jeer, or little 



20. Mr. Plunket's 



2 1 . Caft-iron Lifter for 

 IV. Fig. 21. Center of Friction 



22 — 29. Center of Gravity 

 V. Fig. 30 — 40. Ditto 

 VI. Fig. 41 — 51. Ditto 

 VII. Fig. 52 — 54. Center of Gyration 

 55. Center of Motion 

 56 — 60. Center of Ofcillation 



Chain {See Plate Xn.) 

 61 — 66. Center of Ofcillation 

 Percuffion 

 Pofition 

 Preffure 

 Rotation 

 Central and Centrifugal Forces 

 Centripetal Forces 

 93. Centrifugal Machine 

 94 — 99. Centrobaryc Method 

 Fig. I — 9. Chains 

 10, II. Clay Mill 



Fore Wheels of a Crane-necked Car- 



VIII. 

 IX. 



X. 



XI. 

 XII. 



xin. 



Fig 

 Fi 



67- 



69. 



■6- 70—73- 



74. 75- 



76—80. 



Fig. 81— 84. 



85-92. 



Fig. 



riage 



XIV. 



XIV.* 



XV. 



XV. 



XV. 



2. Jacob's Contrivance for the Fore-wheels 

 of a Carnage 

 Fig. 1,2. Coal Meafuring 

 Fig. I — 15. Water Cocks 

 Fig. I, 2. Compoiition of Motion 

 {See Plate XVI. Jg. I, 2.) 

 Fig. I — 24. Collifion 



{The reference to fg. 22. under theorem \1. of this 



article, Jhould be to Jg. 24. The reference to 



Jg. 23. Jjould be tojg. 22. Injg. 2^. for 



E read Z. The reference toJg. 2^. Jhould be to 



Jg. 23.) 



Y\s. I 7. Comb-making 



6 — 8. Coupling Box 

 4T2 



