. A manual of poisonous plants, chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations. Poisonous plants. 292 MANUAL OF POISONOUS PLANTS the same as those in animals that died in various parts of the state. The black horse, John, -was found in the afternoon of April 2 to be swaying in his gait. He refused feed, had the peculiar dullness of the eyes, and when his limbs were crossed he remained in that position entirely motionless for some time. The next morning the animal was very much worse and at noon he was killed so that an autopsy co
. A manual of poisonous plants, chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations. Poisonous plants. 292 MANUAL OF POISONOUS PLANTS the same as those in animals that died in various parts of the state. The black horse, John, -was found in the afternoon of April 2 to be swaying in his gait. He refused feed, had the peculiar dullness of the eyes, and when his limbs were crossed he remained in that position entirely motionless for some time. The next morning the animal was very much worse and at noon he was killed so that an autopsy could be held. The post-mortem examination showed that all organs were practically normal except the brain which was much softer than normal. I will quote the description of the post mortem as given by Dr. Butler, which is as follows: "On removal of the brain the superior surface of the right cerebral hemi- sphere was noticed to be slightly flattened over the. anterior half. Palpation revealed a soft spot at this place. An incision through the apparently sound gray matter revealed what Mayo described as a sereous abscess in which floated flocculi of broken down brain sub- stance, which presented the appearance, as one stockman said, of a mixture of vinegar and curdled milk. This portion of softened and broken-down white brain substance is in no sense a serous abscess. The line of demarcation between the broken-down and the healthy brain substance was not clearly marked, but surrounding the completely broken-down por- tion of a zone probably half an inch thick that was softer than normal and of a slightly yellow color. The liquid in the cavity, and in which floated portions of soft and partially broken-down brain substance, was slightly yellow, but in no instance was clotted blood or any other microscopic evidence of a hemorrhage to be ; Dr. Butler and Dr. Mayo conducted an experiment with some mouldy corn from a farmer who lost four registered Percheron horses at
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