RAYLESS GOLDENROD AS A POISONOUS PLANT 17 
neys, and lungs. As a rule the erythrocytes did not take the stains 
strongly, and very often faintly stained, swollen, and distorted 
forms were present in considerable numbers. In the veins of the 
liver there was an abundance of granular debris, some of which ap- 
peared to be the remains of degenerated erythrocytes. In some 
lymph glands erythrocytes in considerable numbers were within 
phagocytic cells. 
In addition to the degenerated red blood corpuscles, hematogenous 
pigment in considerable quantities was present in various places. 
This was often free in the blood stream, but nearly as frequently 
was found within phagocytic cells or imbedded in such tissues as 
the epithelial cells of the kidney tubules or the parenchyma of the 
liver. Less often it was in the walls of arteries and other places. 
Evidences of injury to the walls of the blood vessels were not so 
apparent as were those of degeneration of the red blood corpuscles. 
Heart. — The changes in the walls of the ventricles were not so 
advanced as in the tissues mentioned above. In half of the cases there 
were small areas of capillary congestion, and often minute hemor- 
rhages. In none of the cases did the cross striation of the muscle 
fibers stand out well. Many fibers, scattered or in groups, had taken 
the eosin stain strongly, and some were very uniformly stained and 
their nuclei more or less shrunken. In such areas fine granular 
pigment particles were often present. 
Alimentary tract. — Little was found in the various portions of the 
alimentary tract to warrant general conclusions. In some instances 
the various portions of the intestines were congested, accompanied 
with edema. This condition was somewhat more marked in the 
ileum than in other portions. Taken as a whole, there was an apparent 
increase in and swelling of the cellular elements of the interglandu- 
lar tissues of the mucosa and often an invasion of the submucosa by 
leucocytes. In the horse, phagoc} T tic cells containing red blood cor- 
puscles were abundant in both the mucosa and submucosa of the 
various portions of the intestines. 
Lymph glands. — A condition present in the mesenteric lymph 
glands Avas perhaps related to the disturbance in the intestinal walls. 
Almost invariably the lymph spaces in these glands were occupied 
with swollen and often more or less degenerated endothelial leu- 
cocytes, which usually contained engulfed red blood corpuscles or 
the products of their degeneration. In addition the branched reticu- 
lar cells were swollen and sometimes contained granules of hematog- 
enous pigment. 
A similar condition but less marked was found in the posterior 
mediastinal lymph glands. In some instances in both groups as 
well as in other lymph glands, minute hemorrhages were found. 
These were not characteristic of lymph glands, however, but were 
found in other places. 
Spleen. — A well-marked passive congestion was usually found in 
the spleen, accompanied with edema of the Malpighian bodies. 
Frequently the large mononuclear cells were present in abundance in 
the spleen pulp and hematogenous pigment was present in consider- ' 
able quantity. 
Pancreas. — The veins and capillaries of the pancreas were some- 
what distended and usually there was a slight edema. As a rule 
the ducts were more or less distended and contained considerable 
