Lung.—There are no abnormalities in supporting tissue. Alveolar walls are markedly congested. Bronchi normal and show no trace of larval hookworm infestation. Air sacs contain many red blood cells together with a few heart-failure-cells. Congestion of lung. Liver.—No excess of fibrous tissue. Finer details of structure cannot be made out owing to advanced autolytic changes. The only possible pathological changes consist of localized areas where liver cells have fused to form notable masses of pink granular material suggesting local necroses. Autolysis. Intestines.—Four sections are present and all show essentially the same character of changes. Interstitial tissue between muscular tissue and submucosa loosely arranged as though separated by edema. On luminal side of muscular mucosa is a distinct zone of striking tawny yellow color with hematoxylon-eosin combination. This zone is smooth homogeneous and contains a few spindle and stellate cells with no capillaries and with little or no fibrillation. It abuts upon the fundi of the crypts. Interstitial tissue of mucosa is loose and infiltrated with round and spindle cells in its deeper portions. Here it is also congested but congestion is most marked toward lumen where masses of free blood cells occur in interstitial tissue, within lumina of crypts and within lumen of intestine itself; no parasites or ova are found. Epithelium of crypts has granular cytoplasm; goblet cell formation frequently seen; cilia well preserved. Edema; Subacute catarrhal enteritis Hemorrhage. Six instances of nephritis, four parenchymatous and two diffuse, are recorded in the total of seventeen cases of secondary anemia in carnivores. Except in the skeletal disease the marrow is very mildly affected, some edema and reddening grossly and moderate hyperplasia minutely, being the only noteworthy changes. The next order is that of the Ungulata wherein we have found but two cases of frank anemia, an Isabelline Gazelle (_Gazella isabella_) and an Aoudad (_Ovis tragelaphus_). The former had several lesions of different etiology and nature so that an impoverishment of the blood is not astonishing: parasitic (?) cyst in lung, chronic infective arthritis, calcareous tuberculosis, congestion and edema of lungs, osteomalacia, and osteofibroma of maxilla. The condition of the aoudad was too indefinite to permit conclusions. The marsupials are represented by two common Opossums (_Didelphys virginiana_) and a Rufous Rat Kangaroo (_Aepyprymnus rufescens_), two of which suffered also from rickets. The condition of the bone marrow was unfortunately not recorded, but in other rachitic marsupials this tissue follows the changes seen in other orders. One opossum had a hypertrophic gastritis with numerous Physaloptera turgida, a worm frequently associated with chronic thickening of the mucosa; there was also an early portal hepatic cirrhosis with enlargement of the spleen.