Ochroconis gallopavum was identified as the causal agent of fatal encephalitis in a young, short-hair, domestic cat. The cat initially developed an ulcerated mass on the left side of the tongue and signs of pain in the abdomen. The tongue lesion was surgically removed and exploratory abdominal surgery revealed abnormalities suggestive of pancreatitis and peritonitis. During the month after surgery, the cat's health declined, manifested by sluggishness, loss of appetite and abnormal behaviour. Following a final rapid deterioration, the cat became non-responsive and was euthanized. Histologic examination of the brain, lung and mediastinal lymph node lesions revealed large numbers of pigmented, septate, branched, hyphal elements with swollen intercalary and terminal vesicles, and short chains of moniliform hyphal cells. Cultures of the mediastinal lymph nodes yielded a dematiaceous, thermotolerant fungus that was identified as O. gallopavum. This report describes the first well-documented infection in a cat caused by O. gallopavum.

Absorption and emission spectra are reported for polar and non-polar solutions of chlorophyll a and chlorophyll b. These spectra can be interpreted in terms of the formation of chlorophyll dimers and more highly aggregated forms. The phosphorescence spectra of polar and non-polar solutions of chlorophyll a are identical and are associated with emission from am-n-* triplet state.

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Infrared and Raman spectra of 1: 1 complexes of trimethylamine with boron trifluoride, boron t#richloride and boron tribromide have been obtained in the solid state. Samples studied included those isotopically enriched in Z?l" as well as those containing the natural isotopic ratio of 1311 to @O. On the basis of isotopic shifts and trends of frequencies within the series, vibrational assignments of the observed frequencies are proposed. * Based on a dissertation submitted by ROBERT L. AR~STER in partial fulfillment of the requirements of the Ph.D. degree to the Horace H.

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