Vlll 



March 8, 1888. 



Page 



On some New and Typical Micro-organisms obtained from Water and 

 Soil. By Grace C. Frankland and Percy F. Frankland, Ph.D., B.Sc. 

 (Lond.), F.C.S., F.I.C., Assoc. Eoy. Sch. of Mines 414 



Further Observations on the Electromotive Properties of the Electrical 

 Organ of Torpedo marmorata. By Francis Gotch, M.A. Oxon., B.Sc. 

 London 418 



Contributions to the Anatomy of the Central Nervous System in Verte- 

 brated Animals. Part L— Ichthyopsida. Section I. — Pisces. Sub- 

 section III. — Dipnoi. On the Brain of the Ceratodus Forsteri. By 

 Alfred Sanders, M.B.C.S., F.L.S 420 



List of Presents 423 



March 15, 1888. 



On certain Mechanical Properties of Metals, considered in B elation to 

 the Periodic Law. By W. Chandler Roberts- Austen, F.R.S., Professor 

 of Metallurgy, Normal School of Science and Royal School of Mines, 

 South Kensington 425 



Report of the Observations of the Total Solar Eclipse of August 29, 

 1886, made at Grenville, in the Islaud of Grenada. By H. H. Turner, 

 M.A., B.Sc, Fellow of Trinity College, Cambridge 428 



On the Ultra-violet Spectra of the Elements. Part III. Cobalt and 

 Nickel. By G. D. Liveing, M.A., F.R.S., Professor of Chemistry, and 

 J. Dewar, M.A., F.R.S., Jacksonian Professor, University of Cam- 

 bridge 430 



A Class of Functional Invariants. By A. R. Forsyth, M.A., F.R.S., 

 Fellow of Trinity College, Cambridge . 431 



List of Presents 433 



March 22, 1888. 



On the Skull, Brain, and Auditory Organ of a New Species of Ptero- 

 saurian (Scaphognathus Purdoni) from the Upper Lias, near Whitby, 

 Yorkshire. By E. T. Newton, F.G.S., F.Z.S., Geological Survey 436 



The Atoll of Diego Garcia and the Coral Formations of the Indian Ocean. 

 By G. C. Bourne, B.A., F.L.S., Fellow of New College and Assistant 

 to the Linacre Professor in the University of Oxford (Plate 4) 440 



The Chemical Composition of Pearls. By George Harley, M.D., F.R.S., 

 and Harald S. Harley 461 



On the Vertebral Chain of Birds. By W. K. Parker, F.R.S 465 



Second Preliminary Note on the Development of Apteryx. By T. Jeffery 

 Parker, B.Sc, C.M.Z.S., Professor of Biology in the University of 

 Otago 482 



List of Presents.., 487 



