LIST OF ILLUSTRATIONS. 
Plate I. — Professor P. M. Duncan on Guynia annulatct. 
Plates II. to XI. — Professor Owen on the Fossil Mammals of Australia. 
Plate XII. — The Astronomer Poyal, Corrected Wave-lengths for Kirciiiioff’s Spectral 
Lines. 
Plates XIII. to XVI. — Professor A. Macalister on the Myology of the Cheiroptera. 
Plates XVII. to XXIII. — Professor Owen on the Fossil Mammals of Australia. 
Plates XXIV. to XXXI — Professor W. C. Williamson on the Organization of the 
Fossil Plants of the Coal-measures. 
Plates XXXII. to XL. — Professor Owen on the Fossil Mammals of Australia. 
Plates XLI. to XLV. — Professor W. C. Williamson on the Organization of the Fossil 
Plants of the Coal-measures. 
Plate XLVI. — Staff Captain F. J. Evans on the present Variation of the Compass. 
Plate XLVII. — Dr. A. Dupre on the Specific Heat and other Physical Characters of 
Mixtures and Solutions. 
Plates XLVI II. to L. — General Sir Edward Sabine on Terrestrial Magnetism. 
Plates LI. to LIE— Sir B. C. Brodie on the Action of Electricity on Gases. 
