VOLUME 6 Publications of 1668-71, Introductory Notes ‘New Experiments concerning the Relation between Light and Air’, from Philosophical Transactions, nos 3 1-2 (1668) A Continuation of New Experiments Physico-Mechanical Touching the Spring and Weight of the Air, and their Effects. (1669) The I Part (Spring of the Air, 1st Continuation) Notes &c. about the Atmospheres of Consistent Bodies The Contents Of Absolute Rest in Bodies (1669) ‘New Pneumatical Experiments about Respiration’, from Philosophical Transactions, nos 62-3 (1670) Tracts written by the Honourable Robert Boyle (1670) (Cosmical Qualities) An Introduction to the History of Particular Qualities Of the Systematical or Cosmical Qualities of Things 285 Cosmical Suspicions Of the Temperature of the Subterraneal Regions Of the Temperature of the Submarine Regions Relations about the Bottom of the Sea Tracts Written by the Honourable Robert Boyle... Of A Discovery of the Admirable Rarefaction of Air, etc. (1670) (Rarefaction) The Usefulness of Natural Philosophy; II, sect. 2 (1671) Essay I, General Considerations about the Means whereby Experimental Philosophy may become Useful to Human Life Essay II, Of the Usefulness of Mathematics to Natural Philosophy Essay III, Of the Usefulness of Mechanical Disciplines to Natural Philosophy Essay IV, That the Goods of Mankind may be much encreased by the Naturalists Insight into Trades: with an Appendix Essay V, Of doing by Physical knowledge what is wont to require Manual Skill Essay VI (‘X ’), Of Mens great Ignorance of the Uses of Natural Things Glossary