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On the Occurrence of Aluminium in certain Vascular Cryptogams. By 

 A. H. Church, M.A., F.C.S 121 



On the Nature and Limits of Eeptilian Character in Mammalian Teeth. 

 By H. G. Seeley, F.R.S., Professor of Geography in King's College, 

 London 129 



Eesearches on the Structure, Organisation, and Classification of the Fossil 

 Reptilia. IV. On a large Humerus from the East Brak River, South 

 Africa, indicating a New Order of Fossil Animals which was more 

 nearly intermediate between Reptiles and Mammals than the Groups 

 hitherto known. By H. G. Seeley, F.R.S 142 



Researches on the Structure, Organisation, and Classification of the Fossil 

 Reptilia. V. On Associated Bones of a small Anomodont Reptile 

 (Keirognathus cordylus, Seeley), showing the Relative dimensions of 

 the Anterior Parts of the Skeleton, and Structure of the Fore-limb 

 and Shoulder-girdle. By H. G. Seeley, F.R.S 142 



On the Modifications of the First and Second Visceral Arches, with 

 especial Reference to the Homologies of the Auditory Ossicles. By 

 Hans Gadow, Ph.D., MA., Strickland Curator and Lecturer on Com- 

 parative Anatomy in the University of Cambridge 143 



List of Presents 145 



No. 2m.— May 3, 1888. 



List of Candidates ■. 147 



On the Induction of Electric Currents in conducting Shells of small 

 Thickness. By S. H. Burbury, M.A., formerly Fellow of St. John's 

 College, Cambridge 147 



On the Relations of the Diurnal Barometric Maxima to certain critical 

 Conditions of Temperature, Cloud, and Rainfall. By Henry F. 

 Blanford, F.R.S 150 



Effect of Chlorine on the Electromotive Force of a Voltaic Couple. By 

 G. Gore, F.R.S 151 



Electro-chemical Effects on Magnetising Iron. Part II. By Thomas 

 Andrews, F.R.S.E., F.C.S 152 



Report on the Capacities, in respect of Light and Photographic Action, 

 of two Silver on Glass Mirrors of different Focal Lengths. By the 

 Rev. C. Pritchard, D.D., F.R.S., Savilian Professor of Astronomy, 

 Oxford : 168 



On the Development of Voltaic Electricity by Atmospheric Oxidation. 

 By C. R. Alder Wright, D.Sc, F.R.S., Lecturer on Chemistry and 

 Physics, and C. Thompson, F.I.C., F.C.S., Demonstrator of Chemistry 

 in St. Mary's Hospital Medical School 182 



List of Presents 200 



