Document Title: Fragment of original version of Usefulness.
Related Material: Works, vol. 6, pp. 534, 537 (recto). Works, vol. 6, pp. 523-4, 535 (verso). Previously unpublished passage in Works, vol. 13, pp. 305-7.
Extent: Fol. 7 (1 leaf)
Description: (recto:) Text on undiscovered uses of experiments, related to but not identical with passages in section V of Essay X, including opening paragraph. Endorsed, 'belongs to Essay XII'. (verso:) Addendum about method of casting iron with copper, published in section V of Essay X; and unpublished passage about use of urine to produce perfume of musk, different from passage in previous essay.
Hand: rounded 1650s, F (bottom of verso).
Physical Description: Manuscript