Catalogue Entry: NATP00394
Letter from Newton to Henry Oldenburg, dated 11 [June] 1672
 Ph. Trans. N. 88 p. 5084
 1. Of the Practique part of Optiques.
 Of the Theoretique part.
 2. Of the Theoretique part.
 3. Of Mr Hooks Hypothesis, & that the most free & genuine constitution of that & all other mechanicall Hypotheses is conformable to my Doctrin.
 4. Of Mr Hooks concessions, & their limitation to his Hypothesis.
 6. The difficulties of Mr Hooks discourse abstracted from Hypotheses & considered more generally.
 7. That the Ray is not split or any otherwise dilated.
 8 That there are more than two originall colours.
 Obs 10 Microgr.
 9. That whitenesse is a mixture of all colours.
 10. That the Experimentum Crucis is such.
 11. Some particulars recommended to further consideration.
 This Article not Printed
 12. That the Science of Colours is most properly a Mathematicall Science.