LIST OF ILLUSTRATIONS. 
Plate 67.—Mr. J. Norman Lockyer on Spectrum Analysis in Connexion with the 
Spectrum of the Sun. 
Plates 68, 69.—Mr. E. C. Baber on the Minute Structure of the Thyroid Gland. 
Plates 70 to 76.—Mr. J. W. Hulke on the Polacantlius Foxii. 
Plates 77, 78.—Mr. J. N. Langley on the Histology and Physiology of Pepsin¬ 
forming Glands. 
Plates 79-85.—Mr. G. J. PvOMANes and Professor J. C. Ewart on the Locomotor 
System of Echinodermata. 
Plates 86-88.—Captain Abney and Lieutenant-Colonel Festing on the Molecular 
Grouping of Organic Bodies. 
