LIST OF ILLUSTRATIONS. 
Plates I. to IX. — Professor W. C. Williamson on the Organization of the Fossil Plants 
of the Coal-measures. 
Plates X. to XV. — Mr. H. N. Moseley on the Anatomy and Histology of the Land- 
Planarians of Ceylon. 
Plate XVI. — Professor Flower on a newly discovered Extinct Ungulate Mammal from 
Patagonia. 
Plates XVII. to XIX. — Professor Tyndall on the Atmosphere as a Vehicle of Sound. 
Plates XX. to XXVII. — Professor Owen on the Fossil Mammals of Australia. 
Plates XXVIII. to XXXVII. — Mr. W. K. Parker on the Structure and Development 
of the Skull in the Pig. 
Plates XXXVIII. to XL. — Mr. J. Norman Lockyer on Spectrum- Analysis in connexion 
with the Spectrum of the Sun. 
Plate XLI. — Messrs. Lockyer and Roberts on the Quantitative Analysis of certain 
Alloys by means of the Spectroscope. 
Plate XLII. — Mr. G. Gore on Electrotorsion. 
Plates XLIII. to XLIX. — Mr. H. F. Blanford on the Winds of Northern India. 
Plate L. — Mr. H. E. Roscoe on a Method of Measuring the Intensity of the Chemical 
Action of Total Daylight. 
Plates LI. to LVIII. — Professor W. C. Williamson on the Organization of the Fossil 
Plants of the Coal-measures. 
Plates LIX. to LXXI. — Professor Wyville Thomson on the Echinoidea of the 
‘ Porcupine ’ Deep-sea Dredging-Expeditions. 
Plates LXXII. to LXXV. — Mr. H. N. Moseley on the Structure and Development of 
Peripatus capensis. 
Plates LXXVI. to LXXXIII. — Professor Owen on the Fossil Mammals of Australia. 
Plates LXXXIV. to LXXXVI. — Mr. J. Norman Lockyer on Spectrum-Analysis in 
connexion with the Spectrum of the Sun. 
