LIST OF ILLUSTllATIONS. 
Plate I. — Professor Tyndall on the Absorption and Eadiation of Heat by Gaseous 
Matter. 
Plates II. III. — Mr. William Heney Flower on the Posterior Lobes of the Cerebrum 
of the Quadrumana. 
Plates IV. V. — Dr. John Cleland on the Relations of the Vomer, Ethmoid, and Inter- 
maxillary Bones. 
Plates VI. to XVIII. — Mr. Warren De La Rue on the Total Solar Eclipse of July 18, 
1860, observed at Rivabellosa, near Miranda de Ebro, in Spain. 
Plates XIX. to XXV. — Professor Owen on the Dicynodont Reptilia, with a Description 
of some Fossil Remains brought by H.R.H. Prince Alfred from South Africa, 
November 1860. 
Plate XXVI. — Dr. J. P. Joule and Professor W. Thomson on the Thermal Effects of 
Fluids in Motion. 
Plates XXVII. to XXXVI. — Dr. J. S. Bowerbank on the Anatomy and Physiology of 
the Spongiadse. 
Plates XXXVII. XXXVIII. — Professor B. C. Brodie on the Oxidation and Disoxida- 
tion effected by the Alkaline Peroxides. 
Plates XXXIX. XL. — Professor W. A. Miller on the Photographic Transparency of 
various Bodies. 
Plates XLI. to XLIV. — Professor Beale on the Distribution of Nerves to the Elementary 
Fibres of Striped Muscle. 
Plates XLV. to XLVIII. — Mr. J. Locxhart Clarke on the Development of the Spinal 
Cord in Man, Mammalia, and Birds. 
Plates XLIX. to LI. — Mr. F. Jenkin, Experimental Researches on the Transmission of 
Electric Signals through Submarine Cables. 
Plates LII. to LIV. — Mr. Pengelly on the Lignites and Clays of Bovey Tracey, Devon- 
shire. 
Plates LV. to LXXI. — Dr. Heer on the Fossil Flora of Bovey Tracey. 
Plates LXXII. to LXXIV. — Dr. J. S. Bowerbank on the Anatomy and Physiology of 
the Spongiadae. 
