XLIX 



Vol. XXVII. Nr. 188. 

 J. Norman Lockyer: Rechearclies in Spectrum Analysis in 

 eonnection with the Spectrnm of tlie Sun. Burdon Sande rson: Expe- 

 rimtal Results relating to the Rhythmical and Excitatory Motions of the 

 Ventricle of the Heart of tlie Frog , and of the Electrica! Phenomena wMch 

 accompany them. Alfred Sanders: Contributions to the Anatomy of 

 the Central Nervous System in Vertebrate Animals. Part I. Ichthyopsida. 

 Section 1. Pisces. Subsection 1. Teleostei. John Carey: On the Equa- 

 tions of Circles. (Second Memoir). George H. Darwin: On the Bodily 

 Tides of Viscous and Semi-Elastic Spheroids, and on the Ocean Tides on 

 a yielding Nucleus. Dr. Maxwell Simpson: On the Formation Chlor- 

 iodide and Brom-iodide of Ethylidene. Henry E. ßoscoc: Note on the 

 Specific Gravity of the Vapours of the Chlorides of Thallium and Lead. 

 Thomas Davidson: Extract from Report to Professor Sir Wyville 

 Thomson. On the Brachiopoda dredget by „Challenger". Sir William 

 Thomson : Eletrodynamic Qualities of Metals Part VII. F. M. Balfour: 

 On the Existence of a Rudimentary Head-Kidney in the Embryo Chick. 

 E. L. Moss : Observations on Arctie Sea- water and Ice. Samuel Haugh- 

 ton: Notes on Physical Geology. Abney: On the Acceleration of Oxi- 

 dation by the Least Refrangible End of the Spectrum. A. Cayley : A 

 Tenth Memoir on Quantics. T. W. Bridge : Osteology of Polyodon folium. 

 W. Percy Sladen: On Astrophiura permira, an Echinoderm-form inter- 

 mediate between Ophiuroidea and Asteroidea. J. S. Lombard: Expe- 

 rimental Researches on the Temperature of the Head. T. Länder Brun- 

 ton and Sir Joseph Fayrer: Note on the Effect of various Substances 

 in Destroying the Activity of Cobra Poison. J. C ossär Ewart: The 

 Life-History of Bacterium termo and Micrococus, with further Observations 

 on Bacillus. Patrick Geddes and J. C ossär Ewart : On the Life- 

 History of Spirillum. G. G. Stockes: On Easy and at the same titne 

 Accurate Method of Determining the Ratio of the Dispersions of Glasses 

 intended for Objectives. G. D. Liveing and J. Dewar : On the Reversal 

 of the Lines of Metallic Vapours. R. T. Glazebrook : An Experimental 

 Investigation into the Velocities of Normal Propagati on of Plane Waves in 

 a Biasal Crystal, with a Comparison of the Results with Theory. G. Gore : 

 On the Thermo-Electric Properties of Liquids. 

 Vol. XXVn. No. 189. 



Staff Surgeon: Observations on Artic Sea-water and Ice. 

 Vol. XXVIIL No. 190. 



J. H. Poynting: On a method of using the Balance with great 

 delicacy, and its Employment to determine the Mean Density of the Earth, 

 William Crookes; On Repulsion resulting from Radiation: 



