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Similar to Fig. 15. Maximal single shocks 6 per min.; 2 μg. prostigmine present throughout. The effect of increasing the rate of stimulation to 28 per min., and of 0.5 mg. acetylcholine (a) before and (b) after 2 mg. procaine; (c) after washing out; (d) after 2 mg. atropine, and (e) after washing out; (f) after 35μg. curarine.
