In some cases of parasitic bronchitis in older cattle, it has been found, on the irritation which is set up. contrary, the condition of things above described shows that in the most embryos, and by the exudation into the minute lung structure consequent on It is important to note that the absence of the thread worms from the bron- which seems to be negatived by the fact that it is much larger than the rufes- tubes. Pseudalius ovis has often been described, but its life history is not result of the blocking up of the air tubes and cells by the worm, their eggs and and free embryos which were moving about with great activity. A. Koch suggested that it is the embryo form of Strongylus rufescens, a view cens, and certainly does not agree with it in the arrangement of the internal Emaciation, which is the most prominent indication in the affection, is the satisfactorily made out. Dr. Crisp many years ago referred to it as a gordian worm. Other writers have taken it for a species of strongle, and lately chial tubes does not justify a conclusion that the disease did not exist. On the caused the exudation of a thick purulent fluid in small drops, and under the organs. No special importance is to be attached to the presence of one variety nor, indeed, in regard to the symptoms which the infested animals exhibit. name husk to the disease. Sheep and calves suffering from parasitic bronchitis fall off in condition, and expelled from the air tubes. The least pressure applied to a portion of lung advanced cases of parasitic bronchitis there may not be any parasites visible to eggs in various stages of development, many of them containing living embryos, are subject to an irritating dry cough, a symptom which gives the common of strongle more than another from the point of view of cure and prevention, microscope it was seen that the puss-like exudate was composed of masses of post-mortem examination, that all the adult worms had migrated or been