Believes in differentiated nerve-tracts [in Medusa] because of experiment in which contractile waves blocked. [See GJR’s "Evolution of nerves", Nature 16 (1877): 231–3, 269–71, 289–93.] Did not know author of MS was Miss Lawless. Describes experiment on contractile waves in Aurelia. Also studying starfish.

Thanks for CD’s comments on ["Evolution of nerves"]. Admits that he may have "been too keen in my scent after nerves".

Notes effect of reversing direction of current in muscular tissue.