28 BULLETIN 947, IT. S. DEPARTMENT OF AGRICULTURE. 
Lungs. — There is no more uniformity of condition found in the 
lungs than in the liver. As a rule the acute cases have congested 
lungs, the capillaries in some being greatly distended, and there is 
much blood in the arteries. In some cases the pronounced capillary 
congestion has led to a transudation of serum, and some diapedesis 
of erythrocytes. Generally, too, there is a marked catarrhal con- 
dition of the bronchi, which may contain desquamated epithelial 
cells and red blood corpuscles. Alveoli in places contain coagulated 
serum. 
The blood contained in and sometimes filling the arteries is similar 
in condition to that seen in the veins of the liver, except that 
normal leucocytes are rarely seen. 
The lungs of the three chronic cases examined were found to be 
diseased. In the sections of the lung of Sheep 319 there were 
necrotic areas. The alveoli surrounding such areas contain numerous 
leucocytes and some exfoliated epithelial cells. Some small blood 
vessels were engorged. In the lung of Sheep 348 there were areas of 
serous transudation, which, with the thickened alveolar walls and 
marked invasion of leucocytes, obliterated many alveoli. This 
condition probably results from spewed material being drawn down 
the trachea and accounts for the cough so common in old "spewers." 
Sheep 437, an old spewer killed later with Asclepias galioides, had 
lung adhesions and necrotic areas. In sections of the least diseased 
parts of the lung there was an excess of connective tissue. 
Kidneys. — The kidneys are equally variable in their pathological 
condition. In none of the cases examined was there severe con- 
gestion. In all those studied there was an edematous condition of 
the capsule of Bowman, the edema separating the folds of the 
glomeruli and leaving a large clear area between the glomeruli and 
the capsule wall. This is sometimes accompanied with a small 
quantity of stainable material resembling degenerated cytoplasm. 
In most of the cases examined the cells of some portions of the con- 
voluted tubules had undergone degenerative changes. Some are 
swollen, while others are beginning to disintegrate the granular 
material lying in the lumina. 
Alimentary tract. — The most pronounced change occurred in the 
alimentary tract of the acute cases, the exact portion varying with 
the method of administering the material. In four sheep — Nos. 338, 
314, 331, and 413 — which died from single forced feedings, the most 
severe changes were in the rumen and reticulum near the opening 
of the esophagus. In'one sheep which was drenched with an extract 
the severe changes occurred in the walls of the abomasum, colon, 
and rectum, with less severe changes in the small intestine. 
The changes found in the rumen and reticulum walls are of the 
same character, consisting of a very pronounced serous infiltration 
