LIST OF ILLUSTRATIONS. 
Plate 51. —Professor Owen on portions of a Tusk of a Proboscidian Mammal ( Notele - 
phas australis, Owen). 
Plate 52.—Messrs. J. Milne and T. Gray on Seismic Experiments. 
Plate 53.—Dr. W. Flight on the Meteorites of Cranbourne, Rowton, and Middles¬ 
brough. 
Plates 54 to 58. —Mr. A. Fraser on the Development of the Ossicula auditus in the 
Higher Mammalia. 
Plates 59 to 63. —Mr. A. Sanders on the Anatomy of the Central Nervous System in 
Vertebrate Animals. 
Plates 64, 65.—Messrs. A. Waller and A. de Watteville on the Influence of the 
Galvanic Current on the Excitability of the Motor Nerves of Man. 
Plates 66 to 70.—Dr. W. H. Gaskell on the Rhythm of the Heart of the Frog, and 
on the Nature of the Action of the Vagus Nerve. 
Plates 71 to 82. —Mr. J. W. Hulke on the Osteology of Hypsilophodon Foxii. 
Plates 83 to 95. —Dr. H. Watney on the Minute Anatomy of the Thymus. 
Plate 96.— Mr. G. F. Rod well on the Effects of Heat on certain Haloid Compounds 
of Silver, Mercury, Lead, and Copper. 
