1. Jejunostomy does not prevent the development of the chemical changes of the blood characteristic of obstruction of the jejunum in the dog.

2. Jejunostomy following experimental obstruction of the jejunum has no beneficial effect upon the duration of life. There is some evidence that life may be shortened by early jejunostomy.

3. Treatment of jejunal obstruction with sodium chloride solution tends to prolong the life of animals regardless of jejunostomy.

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