206. Pfau’s Attic Punch-forceps 357 207. Removal of the Outer Attic-wall with Forceps 358 208. Diagrammatic Section to show Correct and Wrong Positions of Incus Hook 360 209. Eustachian Catheter 365 210. Passing the Eustachian Catheter 366 211. Passing the Eustachian Catheter 366 212. Passing the Eustachian Catheter 367 213. Passing the Eustachian Catheter 367 214. Author’s Graduated Eustachian Bougie 370 215. Left Temporal Bone, showing Anatomy of the Middle Ear and Mastoid Process 374 216. Diagram showing Position of Sink Incisions in Post-aural Operations 380 217. Schwartze’s Operation 381 218. Schwartze’s Operation 383 219. Schwartz’s Seeker 384 220. Schwartze’s Operation completed 385 221. The ‘Radical’ Mastoid Operation 393 222. Stacke’s Protector 394 223. The ‘Radical’ Mastoid Operation 395 224. Pfau’s Curette for the Eustachian Tube 396 225. The ‘Radical’ Mastoid Operation completed 397 226. Wolf’s Operation 398 227. Stacke’s Operation 399 228. Post-meatal Skin Flaps 400 229. Post-meatal Skin Flaps 401 230. Closure of Wound after ‘Radical’ Mastoid Operation 402 231. Körner’s Post-meatal Flap 403 232. Panse’s Post-meatal Flap 403 233. Stacke’s Post-meatal Flap 403 234. Skin-grafting of Mastoid Wound Cavity after Operation 407 235. Ballance’s ‘Stopper’ for pushing in the Graft 407 236. Pipette for sucking Air and Fluid from beneath the Graft 408 237. Skin-grafting of Mastoid Wound Cavity after Operation 408 238. Skin-grafting of Mastoid Wound Cavity after Operation 409 239. Posterior Portion of Skin Graft covering Outer Surface of Wound Cavity 409 240. Diagram to show Exposure of the Semicircular Canals 423 241. Operation upon the Labyrinth 424 242. Extirpation of the Labyrinth 425