Abstract
Conclusion
The depression of the Brunn Reaction in winter months reported by Boyd, Mack and Smith 1 was found accompanied by complete failure of pituitary (posterior lobe) extract to inhibit loss of normal body water in frogs. On the other hand, the loss of water injected into frogs was inhibited by pituitary (posterior lobe) extract in the winter though to an average extent less than in the summer.
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