=Symptoms.= At the outset these pseudo-membranous forms of bronchitis have the same characters as acute bronchitis, which at the crisis would be marked by the expulsion of fragments of false membrane by coughing. Most frequently it seems that the bronchitis follows its regular course, and in such case it is only during convalescence or a considerable time afterwards that the membranes begin to be discharged during paroxysms of coughing. The patients are subject to intense dyspnœa, appear about to suffocate, and during the efforts then made the false membranes are discharged in the form of half-organised layers, or, on the other hand, in branched masses, resembling twigs. The dyspnœa at once ceases. Despite the development of these false membranes in the bronchi, no alarming symptoms are produced, which is explained by the fact of the false membranes being adherent only to the inner surface of the principal conduits, without closing or even markedly obstructing them or the smaller passages leading to the pulmonary alveoli. When, however, they are displaced, violent reflex spasms are produced as soon as the fragments approach the larynx. =Diagnosis.= The diagnosis rests entirely on examination of the expectorated material. So far as the =prognosis= is concerned, it is less grave than might be supposed from the symptoms. The gravity arises from the fact that this disease has a certain tendency to become chronic. =Treatment= scarcely differs from that of ordinary bronchitis. Tar, creosote in doses of 2½ to 5 drachms given in oil; terpine in doses of ½ to ¾ drachms per day can be recommended. Iodide of potassium also has certain advantages. VERMINOUS BRONCHITIS IN SHEEP AND CATTLE (HUSK, HOOSE, ETC.). Lambs, young sheep, and calves sometimes suffer severely from infestation with lung worms, which set up great irritation in the bronchial passages, leading to chronic bronchitis. The animals show frequent attacks of paroxysmal coughing, during which some of the parasites may be expelled. The irritation produced causes serious loss of condition, and if not alleviated may lead to death. The parasite of the sheep is known as _Strongylus filaria_ (sheep lungworm), that of the calf _Strongylus micrurus_. The worms are from 2 to 4 inches long, whitish in colour, and of the diameter of a hat-pin. =Treatment.= According to generally accepted views among veterinarians and zoologists, it is a comparatively simple matter to kill worms in the bronchial tubes, and a number of cases of the disease are reported in literature which are alleged to have been cured. These views, however, are open to very serious doubt. Neumann (1892b, pp. 590, 591, 593, 594) summarises the subject of treatment as follows:—