CONTENTS. IX 



I^STEUMENTS. 



Page 



I^Fr. W. Maesham Adams on the Meusuratoiv a new Instrument for the Solu- 

 tion of Triangles 59 



Mr. George Dines on a new Ilj^grometer .59 



Dr. J. HoPKiNSON on a Nautical Photometer 69 



Dr. .Tanssen sur un Nouveau Thermometre destine a prendre les Temperatures 



de la Surface des Eaux Marines ou Fluviales 59 



Professor John Phillips on the Temperature-correction of an Aneroid .... (31 



Mr. Macneil Telfoed on the new Marriotti Barometer G2 



Professor Ch. V. Zengeb on the Spiral Top 62 



on the Tangential Balance and a new Saccharometer 63 



Peogress of SciEIirCE. 



Lieut.-Col. A. Strange on the Duty of the British Association with respect 



to the Distribution of its Funds 63 



CHEMISTRY. 



Address by J. II. Gladstone, Ph.D., F.R.S., President of the Section 64 



Dr. A. Crum Brown on Chemical Nomenclature 69 



Dr. F. Crace-Calyert on the Relative Power of Various Substances in pre- 

 venting Putrefaction and the Development of Protoplasmic and Fungus Life 69 



Mr. "WiLLiAii Lant Carpenter on the Presence of Albumen in Neutral 

 Fats, and on a New Process for the Manufacture of Stearic and Palmitic 

 Acids, &c 71 



on the Mode of Collection of Samples of 



Deep-sea Water, and of their Analysis for dissolved Gaseous Constituents, 

 employed on board II.M.S. ' Porcupine ' during the Summers of 1869 and 

 1870 72 



Mr. W. J. Cooper on a proposed Method of preventing the Fermentation of 

 Sewage 73 



Mr. John Galletly on Ignition of Cotton by Saturation with Fatty Oils . . 73 



Mr. George Gladstone on the Dust thrown up by Vesuvius during the late 

 Eruption 74 



Dr. J. II. Gladstone on filiform Native Silver 75 



and Mr. Alfred Tribe on the mutual helpfulness of 



Chemical Affinity, Heat, and Electricity in producing the Decomposition of 

 Water 75 



The Rev. II. Highton on a Powerful Galvanic Battery 77 



Professor J. W. Mallet on the effect upon Meteoric Iron, as regards the cnpa- 

 bility of being forged, of previous heating to redness or whiteness in vacuo . 77 



on the Fusion of Metallic Arsenic 77 



on the occurrence of Native Sulphuric Acid in 



Eastern Texas 78 



on the occurrence in recent Pine timber of Fich- 



telite, a Hydrocarbon hitherto only known in a fossil state 79 



Dr. T. Moffat on Dr. Moffat's Tube Ozonometer 79 



Dr. Oppenheim on the Action of Phosphorus on Alkaline Solutions of Metals 79 



