Abstract
1. The experimental procedure was based upon the measurement of bromide intake and carbon dioxide output following a period of immersion of samples ofElodea tissue in dilute potassium bromide solutions. In each experiment one factor was varied, and the shifts in rates of respiration and of solute absorption compared. 2. The factors studied were oxygen tension, temperature, position relative to the growing point of the plant, time, and the carbohydrate content of the tissue. The results indicate that an induced rise or fall in the rate of respiration is closely but not exactly paralleled by a similar rise or fall in the rate of bromide absorption. 3. It is indicated that the observations onElodea corroborate the findings of other workers based on the study of root and storage tissues. The general significance of the intimate connection between respiration and absorption is then discussed.
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