I. Neuropathology Resulting from Comparatively Rapid Carbon-monoxide Asphyxia. II. Neuropathology Resulting from Comparatively Slow Carbon-monoxide Asphyxia. III. Neuropathology Resulting from Comparatively Slow Carbon-monoxide Asphyxia; Reaction During 16 to 165 Days After Exposure. IV. Neuropathology Resulting from Comparatively Rapid Carbon-monoxide Asphyxia by Atmospheres Deficient in Oxygen. V. Blood Chemistry Changes Resulting from Comparatively Rapid Asphyxia by Atmospheres Deficient in Oxygen. VI. Blood Chemistry of Dogs After Comparatively Rapid Carbon-monoxide Asphyxia