Undulated Grass Parrakeet ♂ (_Melopsittacus undulatus_). Section of liver shows organic capsule normal. Nothing remains of the original structure by which it might be recognized, suggestion in places of granular cells resembling liver cells being only occasional occurrences and in small numbers. Where liver cells do occur they are highly granular in various degrees of atrophy and show various grades of nuclear retrogression. Greatest part of section consists of dense, white fibrous tissue in which lymphocytes are rather diffusely placed together with large numbers of epithelium-lined spaces. These spaces are often elongated after manner of imperfect ducts but are of irregular form, have single layer of low cuboidal epithelium and richly staining nuclei. Upon search certain acini are found to have especially hyperchromatic nuclei and penetration of basement membrane. In such localities collections of epithelial cells are to be seen in plug form in lymphatics and acini of imperfect development of lumen are found. In addition to these epithelial lesions connective tissue ones are seen, occurring generally in restricted localities. The interstitial framework is seen to consist of closely placed spindle cells, some of which are especially elongated after manner of imperfect ducts but are of irregular form, directed in a definite, purposeful manner, but interlace in the whorling manner noted in fibromas. Nuclei are, however, entirely too chromatic for a connective tissue tumor. Whenever a vessel occurs in these regions its lining endothelium is always swollen and nuclei in its wall will be proliferated and of embryonic type. This latter condition is apt to occur in patchy manner, part of wall appearing normal and other parts containing these peripherated elongated nuclei. Secondary tumors were observed in the liver seven times as follows: Red Kangaroo (_Macropus rufus_) from malignant papilloma of the stomach; Spotted tailed Dasyure (_Dasyurus maculatus_) from cancer in the small intestine; Dorcas Goat (_Capra hircus_) from sarcoma in lymph nodes in mediastinum; Raccoon-like Dog (_Canis procyonoides_) from mixed tumor of thyroid; Undulated Grass Parrakeet (_Melopsittacus undulatus_) from a brain tumor probably glioma; another of same species from a sarcoma of pectoral muscle; European Robin (_Erithacus rubeculus_) adenoma of adrenal (_hypernephroma_). SECTION VII THE ALIMENTARY TRACT, PART 3. THE PANCREAS