85 ([return])
[ Briefe an Merck, II., p. 76.]
86 ([return])
[ Briefe an Merck, I., p. 105; II., p. 89. Cf. Malten's Bibl. d. Weltk. 1840, I, p. 380.]
87 ([return])
[ Böttiger, Litt. Zust., I., p. 229.]
88 ([return])
[ Jacobi's Auserl. Briefwechsel, I., p. 262. Briefe an Merck, II., p. 93; I., pp. 102, 118.]
89 ([return])
[ Wieland, Briefe an Fr. La Roche, pp. 184, 187.]