VI 



Page 



On the Photographic Spectrum of the Great Nebula in Orion. By J. 

 Norman Lockyer, C.B., F.R.S 285 



On the Absorption Spectra of Dilute Solutions. By Thos. Ewan, B.Sc., 

 Ph.D., 1851 Exhibition Scholar in Chemistry in the Owens College.... 286 



Researches on the Structure, Organisation, and Classification of the 

 Fossil Reptilia. Part IX. Section 4. On the Gomphodontia. By 

 H. G. Seeley, F.R.S 288 



Researches on the Structure, Organisation, and Classification of the 

 Fossil Reptilia. Part IX. Section 5. On new Cynodontia. By H. 

 G. Seeley, F.R.S ." 291 



Researches on the Structure, Organisation, and Classification of the 

 Fossil Reptilia. Part IX. Section 6. Associated Remains of two 

 small Specimens from Kilpfontein. By H. G. Seeley, F.R.S 295 



On the Evolution of the Vertebral Column of Fishes. By H. Gadow, 

 Ph.D., F.R.S., and Miss E. C. Abbott 296 



On the Structure and Affinities of Heliopora cotrulea, Pall., with some 

 Observations on the Structure of Xenia and Heteroxenia. By Gilbert 

 C. Bourne, M.A., F.L.S., Fellow of New College, Oxford 299 



Degenerations consequent on Experimental Lesions of the Cerebellum. 

 By J. S. Risien Russell, M.D., M.R.C.P., Assistant Physician to the 

 Metropolitan Hospital 303 



A Contribution to the Study of (i) some of the Decussating Tracts of 

 the Mid- and Inter-brain, and (ii) of the Pyramidal System in the 

 Mesencephalon and Bulb. By Hubert Boyce, M.B., Assistant Pro- 

 fessor of Pathology in University College, London 305 



A Magnetic Survey of the British Isles for the Epoch January 1, 

 1891'. By A. W. Riicker, F.R.S., and T. E. Thorpe, F.R.S. [Title 

 only] 307 



On the different Forms of Breathing. By William Marcet, M.D., 

 F.R.S. [Title only] 307 



List of Presents 307 



No. 338. 



Third Report to the Royal Society Water Research Committee. By 

 Percy F. Fraukland, Ph.D., B.Sc., F.R.S., Professor of Chemistry in 

 Mason College, Birmingham, and H. Marshall Ward, D.Sc., F.R.S., 

 F.L.S., F.R.H.S., Professor of Botany, Royal Engineering College, 

 Cooper's Hill 315 



No. 339. 



Report of Magnetical Observations at Falmouth Observatory for the 

 Year 1893 ., 557 



Obituary Notice : 



Frederick Le Gros Clark i 



Index v 



Errata ... x 



