Sir H. Davy, Dr. Wollaston, and Dr. Young. 153 



The Bakerian Lecture. On the Force of Percussion. Read Nov. 14, 

 1805. Vol. xcvi., p. 13. 



On Fairy Rings. Read March 12, 1807. Vol.xcvii., p. 133.' 



On Super-acid and Sub-acid Salts. Read Jan. 28, 1808. Vol. xcviii., 

 p. 96. 



On Platina and Native Palladium from Brazil. Read March 22, 1800. 

 Vol. xcix., p. 189. 



On the Identity of Columbium and Tantalium. Read June 8, 1809. 

 Vol. xeix., p. 24G. 



Description of a Reflective Goniometer. Read June 8, 1809. Vol. xcix., 

 p. 253. 



Croonian Lecture. On Muscular Action, Sea Sickness, and the salutary 

 Effects of Exercise on Gestation. Read Nov. 16, 1809. Vol. c, p. 1. 



On Cystic Oxide, a new species of Urinary Calculus. Read July 5, 1810. 

 Vol. c, p. 223. 



On the Non-existence of Sugar in the Blood of Persons labouring under 

 Diabetes Mellitus. Read Jan. 24, 1811. Vol. ci., p. 96. 



On the Primitive Crystals of Carbonate of Lime, Bitter-spar, and Iron- 

 spar. Read Feb. 13, 1812. Vol. cii., p. 159. 



On a Periscopic Camera-Obscura and Microscope. Read June 11, 1812. 

 Vol. cii., p. 370. 



The Bakerian Lecture. On the Elementary Particles of certain Crystals. 

 Read Nov. 26, 1812. Vol. ciii., p. 51. 



On a Method of Freezing at a Distance. Read Dec. 17, 1812. Vol. ciii., 

 p. 71. 



A Method of Drawing extremely fine Wires. Read Feb. 18, 1813. 

 Vol. ciii., p. 114. 



Description of a Single-Lens Micrometer. Read Feb. 25, 1813. Vol. ciii., 

 p. 119. 



A Synoptic Scale of Chemical Equivalents. Read Nov. 4, 1813. Vol. 

 civ., p. 1. 



On the cutting Diamond. Read May 2, 1816. Vol. cvi., p. 265 

 Observations and Experiments on the Mass of native Iron found in 

 Brazil. Read May 16, 1816. Vol. cvi., p. 281. 



On the method of cutting Rock Crystal for Micrometers. Read Feb. 24, 



1820. Vol. ex., p. 126. 



On Sounds inaudible by certain Ears. Read June 29, 1820. Vol. ex., p.306. 



On the Concentric Adjustment of a Triple Object-Glass. Read Dec. 13, 



1821 . Phil. Trans. 1822, p. 32. 



On the Finite Extent of the Atmosphere. Read Jan. 17, 1822. Phil. 

 Trans. 1822, p. 89. 



On Metallic Titanium. Read Dec. 12, 1829. Phil. Trans. 1823, p. 17. 



