VOLUME 7 Publications of 1672-3, Introductory Notes, An Essay about the Origin and Virtues of Gems (1672), Tracts written by the Honourable Robert Boyle (1672) (Flame and Air), New Experiments, touching the Relation betwixt Flame and Air, New Experiments about Explosions, An Hydrostatical Discourse, An Hydrostatical Letter, New Experiments... on Bodies under Water, New Experiments about... Heavy Solids and Fluids, Essays of Effluviums (1673), Of the Strange Subtlety of Effluviums, Of the Great Efficacy of Effluviums, Of the Determinate Nature of Effluviums, Experiments to Make Fire and Flame Ponderable, A Discovery of the Perviousness of Glass, Catalogue of Boyles Writings, Tracts... By the Honourable Robert Boyle (1673) (Saltness of the Sea), Of the Positive or Privative Nature of Cold, Two Problems about Cold An Attempt to manifest and Measure the Great Expansive Force of Freezing Water, A New Experiment about the Production of Cold Observations and Experiments about the Saltness of the Sea Relations about the Bottom of the Sea, Of the Natural and Preternatural State of Bodies, A Statical Hygroscope, A Brief Account of the Utilities of Hygroscopes Statical Hygroscope: Appendix Papers in Philosophical Transactions, 16 71-3 Glossary