Notebooks of The Essays on the intellectual powers of man Seven octavo MS. notebooks of The Essays on the intellectual powers of man. Marked: 2 (II); 3 (III); 4 (IV); 5 (V); 16 (VI); 17 (VII); 15 (VIII). [MS.2131.3 I] Thirteen octavo MS. notebooks of Essays on the intellectual powers of man. Marked: 2d - 14 th (IX - XXI) [MS.2131.4 I] For first notebook in series see MS 2131/2/II/15 18th century