STIMULATION BY MINERAL AND FATTY ACIDS IN THE BARNACLE BALANUS BALANOIDES

Abstract
1. Stimulation in the rock barnacle Balanus balanoides by hydrochloric, sulfuric, and nitric acids, and by the first seven members of the normal aliphatic acid series has been studied. The hydrogen ion concentrations of the solutions tested varied from 3.2 x 10–8 to 5.889 x 10–6. The criterion of response was percentage closure in groups of individuals, recorded at 1 minute intervals until maximum closure occurred.

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