CONTENTS' 



V 



sion of Iron by Sea Water. 2. Mr Ettrick on an Improvement in Davy's 

 Safety Lamp. 3. Mr Kane on Pyroxylic Spirit. 4. Mr Fox on the 

 effect of Melted Iron upon the Magnet. 5. Dr Turner's Report on the 

 Opinion of the Committee appointed at last Meeting to take into consi- 

 deration the adoption of a uniform Set of Chemical Symbols for this 

 Country. 6. Mr Davy on the Preservation of Tin-Plate by the Agency 

 of Zinc. 7 Mr Graham on the Constitution of Salts. 8. Mr Johnston on 

 the Optical Properties of Chabasite. 9. Dr Daubeny on the Sublimation 

 of Carbonate of Magnesia by Volcanic Action. 10. Dr Dalton on the 

 Distilled Liquors from Caoutchouc. 11. Mr Mallet on the Holes in 

 Lamps for the Passage of Gas. 12. Mr Connell's Analysis of Fossil 

 Scales. 13. Mr Kane on two Compounds of Tin and Platinum. 14. Mr 

 Snow Harris on a Modified Electrometer. 15. Dr Newbigging on the Co- 

 lour of Arterial Blood. 16. Mr Hartop on the use of the Air Blast in the 

 Manufacture of Pig-Iron. 17- Colonel Colby on the Ordnance Survey 

 of the County of Londonderry. 18. Dr Apjohn on a Method of De. 

 termining the Specific Heats of Gases. 19. Dr Dalton on Chemical 

 Symbols. 20. Mr Mallet on a White Material fitted for the Manufac- 

 ture of Paper prepared from Turf. 21. Mr Davy on the relative Values 

 of Virginian and Irish Tobacco. 22. Mr Scanlan on a New Fluid, Pie- 

 pared from Pyroligneous Acid. 23. Mr Moor on the Corrosion of Lead 

 Pipes. 24. Dr Barker on a New Mode of Separating the Peroxide of 

 Iron by means of Acetate of Potash. 25. Dr Geoghehan on the Em- 

 ployment of the Double Salt of Iodide of Potassium and Bicyanide of 

 Mercury, for the purpose of detecting Muriatic Acid in Prussic Acid. 

 26. Mr Johnston on the Iodides of Gold. 27- Dr William Barker on 

 the Passage of Electricity along a Platinum Wire. 28. Mr Scanlan on 

 Crystallized Hematine. 



Section D. Zoology and Botany, 400 — 1. Mr Niven on a Natural Ar- 

 rangement of Plants for a Botanical Garden. 2. Mr Bell on Pentacrinus 

 europseus and Beroe ovatus, in a Living State from Howth. 3. Notice 

 of some Bare Plants found in Scotland. 4. Mr Mackay on Bog Timber 

 from the County of Westmeath. 5. Colonel Sykes on certain Species of 

 Birds common to India, the Cape, and Europe. 6. Mr Nicol on the 

 Structure of the Horizontal Branches of the Natural Family of Coniferse. 

 7. Dr West on the Bog Yew. 8. Dr Jacob on the Infra-Orbital Cavities 

 or Larmiers of French Authors. 9. Dr Daubeny on the Circumstances 

 affecting the Exhalation of Moisture from the Leaves of Plants. 10. 

 Dr Neill on a Land-Rail found in a Torpid State. 11. Mr Drummond 

 on the Zoology of the Island of Rathlin, on the Coast of Antrim. 12. 

 Observations on Bog-Tallow. 13. On the Disappearance of many Fishes 

 from the Coasts of Antrim and the Firth of Forth. 14. Mr Sturge on 

 a Live Toad found in a Solid Mass of Red Sandslone. 15. Dr Barry 

 on the Colour of the Sky, as seen from the Summit of Mont Blanc. 16.; 

 Mr Hamilton on a Yew found in a Bog in Queen's County. 17. Mr 

 Mackay's List of Plants peculiar to Ireland. 18. On the Localities of 

 Plants. 19. Mr Saunderson on Yew-Trees in the North of Ireland.^ 20. 



