CONTENTS (continued). 



Jume 10, 1886. 



PAGE 



L On the Blood- Vessels of Mustelus antarcticus : a Contribution to the 

 Morphology of the Vascular System in the Vertebrata. By T. 

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

 University of Otago, N.Z 472 



II. A -Minute Analysis (experimental) of the various Movements pro- 

 duced by stimulating in the Monkey different Regions of the 

 Cortical Centre for the Upper Limb, as defined by Professor 

 Ferrier. By Charles E. Beevor, M.D., M.E.C.P., and Professor 

 Victor Horsley, F.E.S., B.S., F.E.C.S 475 



III. On the Discrimination of Maxima and Minima Solutions in the 



Calculus of Variations. By E. P. Culverwell .... 476 



IV. On the Anatomy, Histology, and Physiology of the Intraocular 



Muscles of Mammals. By Walter H. Jessop, M.A., M.B. 

 Cantab., F.E.C.S. , Demonstrator of Anatomy Jo St. Bartholomew's 

 Hospital, London, &c. . . . . . -. . . . 478 



V. On the Place of Origin of Uric Acid in the Animal Body. By 



Alfred Baring GUrrod, M.D., F.E.S 484 



VI. On the Lifting Power of Electromagnets and the Magnetisation of 



Iron. By Shelford Bidwell, M.A., LL.B 486 



VII. On a New Scale for Tangent Galvanometers. By W. H. Preece, 



F.E.S. , and H. E. Kempe 496 



VIII. On Fluted Craterless Carbons for Arc Lighting. By Sir James N. 



Douglass. (Plate 6) . . 500 



IX. On some new Elements in Gradolinite and Saniarskite, detected spec- 



troscopically. By William Crookes, F.E.S. , V.P.C.S. . . 502 



X. The Distribution of Micro-organisms in Air. By Percy F. Frank- 

 land, Ph.D., B.Sc, F.C.S., F.I.C., Assoc. Eoy. Sch. Mines . . 509 



XI. On the Multiplication of Micro-organisms. By Percy F. Frank- 

 land, Ph.D., B.Sc, F.C.S., F.LC., Assoc. Eoy. Sch. Mines . . 526 



XII. Observations on Pure Ice and Snow. By Thomas Andrews, F.E.S.E., 



F.C.S., Wortley Iron Works, near Sheffield 544 



XIII. On the Graseous Constituents of Meteorites. By G-errard Ansdell, 



F.C.S., and Prof. James Dewar, F.E.S 549 



XIV. Preliminary Communication on the Structure and Presence in 



Sphenodon and other Lizards of the Median Eye, described by von 

 G-raaf in Anguis fragilis. By W. Baldwin Spencer, B.A., 

 Demonstrator of Comparative Anatomy in University of Oxford, 

 Fellow of Lincoln College 559 



XV. Star Photography ; the Effects of Long and Short Exposures on Star 



Magnitudes. By Isaac Eoberts, F.E.A.S 566 



XVI. An Instrument for the Speedy Volumetric Determination of Carbonic 



Acid. By W. Marcet, M.D., F.E.S 566 



XVII. On the Practical Measurements of Temperature ; Experiments made 

 at the Cavendish Laboratory, Cambridge. By H. L. Callendar, 

 B.A., Scholar of Trinity College, Cambridge .... 560 



