SURGERY. 



TRIGONOMETRY. 



4- 



5- 

 6. 



7- 

 8. 



9- 



10. 



II. 



12. 



13- 



rig. I- 



4- 

 5- 



7- 



PtATE 

 VIII. No. 2. Trepanning Inflruments 



Fig. I. Spring Forceps for extradting the Circle 

 of Bone and Fragments 

 2, 3. Trephines, with Hiding Centre Pins, 

 as made by Savigny 

 Scalpel 



Common Elevator 

 Mr. Hey's Saw, with curved Edges 

 Lenticular 

 Rafpatory 



Mr. Hey's fmall ilraight Saw 

 Trephine, with half of its fawing edge 



filed away 

 Brufh for cleaning the Teeth of the 



Trephine 

 Mr. Hey's large ftraight Saw 

 Centre Pin and Screw 

 IX. ' Truffes 



-3. Common Trufles 

 Dr. Hulme's Palm Trufs 

 Mr. Whitford's Ditto 

 Mr. Salmon's Patent Ditto 

 Mr. Marrifon's Ditto, for Exomphalos 

 9 — II. Mr. England's Ditto 

 X. Inftruments for the Extraftion of Ca- 



taraft 

 Fig. 1. Minute Steel Tenaculum, for extraft- 

 Bits of the Capfule 



2. Cline's Inftrument for dividing the 



Capfule 



3. La Faye's Cyftotome for Ditto 



4. 5. Sciffars for enlarging the Wounds 



of the Cornea 



6. Tube for injefting Quickfilver into the 



Lachrymal Sac 

 7 — 10. Anel's Syringe and Pipes 



1 1. Ware's Stiles 



12. Wathen's Tubes 



13. Small Lancet for puntturing the La- 



chr J mal Sac 



14. Gibfon's Knife for Lithotomy 



XI. Inflruments for Couching, and the Ex- 



traftion of the Cataraft . 

 Fig. I. Broad Silver Hook for raifing the Up- 

 per Eyelid 



2. Pellier's Hook for the fame purpofe 



3. A flendcr round Couching Needle 



4. Spear-fhaped two-edged Ditto 



5. 6. Scarpa's curved Couching Needle 



7. Hey's Couching Needle 



8. 9. The fame magnified 



10, II. Wathen and Phipps's Knives for 

 Extradtion 



12. Richter's Knife 



13. Wenzel's Ditto 



14. Ware's Ditto 



15. 16. Knives for enlarging the Wound 



of the Cornea 



17. Forceps for taking away Pieces of the 



Capfule 



18. Wenzel's Forceps for Ditto, and taking 



away Fragments of opaque Matter 

 IQ. Needle for dividing the Capfule, and 

 . Curette for extrafting Fragments of 

 the Cataraft 



Plate 



I. & VI. Fig. 



(VI.) Fig 



SURVEYING. 



1. Protraftor 



2. Semicircle (See Plate V\l. fg. 3.) 

 3 — 9. Chain, Meafuring by 



10. Convergency of Meridians 



(^Referred to as Plate II. Jig. 10.) 

 I, 2. Level, Common Spirit 



3. Huygen's Level 



4. American Ditto 



5. 6. Watering Ditto 

 7 — II. Defaguliers's 



TELEGRAPH. 

 Fig. I — 13. Vocabulary and Machinery 



TRIGONOMETRY. 



I. Fig. I — 3. Gunter's Scale 

 4. Secant and Sine 

 5 — 7. Settor , 



