aphtha, or thrush, 263

Operations--
asepsis, importance of, 289
surgical--
chapter by William Dickson, William H. Lowe, 289-302
manner of securing the animals, 289
uses of anesthesia, 289

Ophthalmia--
simple, causes, symptoms, and treatment, 344
specific, symptoms, treatment, and prevention, 345

Opium poisoning, description and treatment, 61

Orbit--
bony, necrosis affecting, cause and treatment, 352
fracture, cause and treatment, 352
tumors, cause and treatment, 353

Orbital--
and periorbital abscess, symptoms and treatment, 352
cavity of the eye, description, 342

Orchitis, description and treatment, 152

_Ornithodoros megnini_, ear tick of cattle, 518

Osteitis, description and treatment, 265

Osteoma, description and treatment, 314

Osteomalacia, description, symptoms, and treatment, 267

Osteomyelitis, description and treatment, 266

_Ostertagia ostertagi_, encysted stomach worm of cattle, 523

Otitis, symptoms and treatment, 355

_Otobius magnini_, ear tick, 518

Ovariotomy, description of the operation, 301

Ovum, inclosed, description and treatment, 181

Ox warbles and grubs, treatment, 507

Pains, labor, before relaxation of passages, 175

Palpitation of heart, description, 76

Palsy--
following calving, description and treatment, 233
of neck of bladder, cause and treatment, 130

Papillary growths and warts on the penis, treatment, 156

Papilloma, description and treatment, 312

Paralysis--
bladder, causes and treatment,