230 RECORD OF THE ROYAL SOCIETY 



1872. William Kitchen Parker. 



' On the Structure and Development of the Skull of the Salmon (Salmo 

 mlar, L.).' Proceedings, vol. 20. 



1873. Earl of Rosse. 



' On the Radiation of Heat from the Moon, the Law of its Absorption by our 

 Atmosphere, and its variation in Amount with her Phases.' 



Proceedings, vol. 21. 



1874. J. Norman Lockyer. 



'Researches in Spectrum Analysis in connection with the Spectrum of the 

 Sun.' Part III. Phil. Trans., 1874. 



1875. William Grylls Adams. 



' On the Forms of Equipotential Curves and Surfaces and on Lines of Flow.' 



Proceedings, vol. 24. 



1876. Thomas Andrews. 



' On the Gaseous State of Matter.' Proceedings, vol. 24. 



1877. William Crawford Williamson. 



' On the Organization of the Fossil Plants of the Coal Measures.' Part IX. 



Phil. Trans., 1878. 



1878. William Crookes. 



' On Repulsion resulting from Radiation. Part V.' Phil. Trans., 1878. 



1879. William Crookes. 



' On the Illumination of Lines of Molecular Pressure and the Trajectory of 

 Molecules.' Phil . Trans. , 1879. 



1880. Captain William de W. Abney. 



' On the Photographic Method of Mapping the least refrangible end of the 

 Solar Spectrum.' Phil. Trans., 1880. 



1881. JohnTyndall. 



' Action of free Molecules on Radiant Heat, and its conversion thereby into 

 sound.' Phil. Trans., 1882. 



1882. Heinrich Debus. 



' On the Chemical Theory of Gunpowder.' Phil. Trans., 1882. 



1883. William Crookes. 



' On Radiant Matter Spectroscopy : the Detection and wide Distribution of 

 Yttrium.' Phil. Trans., 1883. 



1884. Arthur Schuster. 



' Experiments on the Discharge of Electricity through Gases. Sketch of a 

 Theory.' Proceedings, vol. 37. 



1885. William Huggins. 



' On the Corona of the Sun.' Proceedings, vol. 39. 



1886. Captain William de W. Abney and Major-General Edward Robert 



Festing. 

 ' Colour Photometry.' Phil. Trans., 1886. 



1887. Joseph John Thomson. 



' On the Dissociation of some Gases by the Electric Discharge.' 



Proceedings, vol. 42 (Abstract). 



