Reports observations on Tremella and of seeing Adanson’s paper after writing his results. Observed a spontaneous movement, saw dry plants return to life several times after being given water, and saw plants in the dark move towards the light. Mentions other microscopical observations briefly and suggests that there is no sharp line between animals and plants. Discusses the “sap movement” (i.e., protoplasmic movement) in Chara [cf. AD 38, 39]. Draft of reply dated 26 Fevrier 1775. Reports having read Corti’s experiments to the Académie and to have made new experiments himself. Was not surprised by Corti’s observations on Tremella but is surprised at those of M. Desmars, a Boulogne physician, who announced (Journal oeconomique, Apr. 1761) observing a comparable movement in Conferva, which seems to be far from the truth. Writes that Corti’s experiments partly confirm his own and in part are 37 new discoveries, to be continued. Proposes that Corti repeat the Conferva experiments of Desmars. Adanson does not know of Corti’s paper on “animalcules des infusions.” Finds a great demarcation between plants and animals. Tried to verify Corti’s observations on Chara, but the season was unfavorable. Does not dare to suppose that some animal entered the joints, whose intestine movement was taken for that of the plant. Notes that his judgment will be deferred pending further study.