=Carcinoma= can only involve the skull-bones as a metastatic deposit--more commonly in association with mammary cancer--or by direct invasion from an overlying epitheliomatous scalp ulcer. In the former instance, any radical treatment would be contrary to all surgical principles. In the latter case, presuming that the cervical glandular region is unaffected or capable of removal, the scalp ulcer should be freely excised together with the whole thickness of underlying bone. The resultant osseous gap may be covered in by means of a plastic flap derived from neighbouring healthy tissue. [77] _Lectures in Pathological Anatomy._ [78] Hunter Tod, _Diseases of the Ear_, p. 37. [79] _Sarkomen des knöchernen Schädelgewölbes_, 1895. [80] _Über die Beziehung von Träumen zu den malignen Geschwülsten_, 1895. INDEX Abbé’s operation for tic doloreux, 60 Abscess of the brain, acute traumatic, 247 chronic otitic, 249 multiple, 247 of cerebellum, 258 frontal lobe, 267 temporo-sphenoidal, 263 Acoustic tumours, 213 Adhesions, osseous and meningeal, 195 Alcohol injections in tic doloreux, 313 Anæsthesia in head operations, 12 Anosmia, 162, 220, 263 Aphasia, 142, 155, 221, 258 Apraxia, 221 Arachnoid cysts, 203 Arachnoid hæmorrhages, 158 Arachnoid œdema, 168, 186, 203 Aran’s theory of irradiation, 73 Archibald on birth-hæmorrhages, 53 compression, 168, 178 Ataxia, 164, 224, 259 Attitude in cerebellar lesions, 224, 262 Aural exostoses, 326, 329 Author’s operation for defects in the skull, 199 hydrocephalus, 64 subdural hæmorrhages, 156 Basal cephaloceles, 34 Base of skull fractures of, 73 symptoms observed in fractures of, 89 treatment in fractures of, 116 weakness of, 73 Basic foramina, their influence on basic fractures, 81 Basic fracture, the typical, 77 Bergmann (von) on cephaloceles, 36 laceration of the brain, 165 middle meningeal hæmorrhage, 143, 148 Bilateral cerebellar exposure, 240 Birth-fractures, 44 Birth-hæmorrhages, 50 Bland Sutton on dermoids, 56 Blood-pressure in compression, 174 concussion, 167 in middle meningeal hæmorrhage, 140 operations on the skull and brain, 11, 12 tumours, 219 Blood-cysts (subdural), 203 Bone-flaps in cephaloceles, &c. 39 (König-Müller), 196 (osteoplastic re-section), 25 Boullet on fracture of the mastoid bone, 108 Bowen on subdural hæmorrhage, 153, 158 Bowlby (Sir Anthony) on bullet-wounds, 297, 299 Brain abscess of, 247 compression of, 172 concussion of, 166 injury to, 159 irritation of, 171 tumours of, 210 Brain-matter, escape of in basal fractures, 93, 101 Broca’s area, 8, 221 Bullet-wounds of the skull and brain, 294 Burghard on Gasserian ganglion removal, 320 Bursting and compression theories, 74