ELISHA MITCHELL SCIENTIFIC SOCIETY. 7 



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20. Action of Gravity on one Atom ' Chas. Phillips. 



Read by title : 



21. Action of Ammonia on Lead Chloride.. Julian Wood. 



22. Decomposition of Red Hematite (Chapel Hill Mine) F. P. Venable. 



23. Barometrical Determination of Elevation of Chapel Hill J. W. Gore. 



24. Stability of Filters washed by Hydrofluoric Acid F. P. Venable. 



25. Observation on movement of Water J- A. Holmes. 



26. Note on Lunar Halos F. P. Venable. 



March 8th, 188.1. 



27. Rosin and Turpentine W. B. Phillips. 



28. Dissolved Phosphates H. B. Battle. 



29. Tornado of February 19th, 1884 J. A. Holmes. 



Read by title: 



30. Results of Observation on Pressure and Temperature at 



Chapel Hill ..Chas. Phillips. 



31. Estimation of Phosphoric Acid as Magnesium Pyro- 



phosphate : J. L. Borden 



32. Alterability of Amorphous Phosphorus ...J. C. Roberts, 



33. Solvent Action of Gasoline on Copper F. P. Venable. 



34. Caffeine in Yeopon Leaf F. P. Venable. 



April 12th, 1884. 



35. Rotation of the Eearth R. H. Graves. 



36. The " Chatham Blood Shower" ... .... F. P. Venable. 



37. Tornado of March 25th, 1884 J. A. D. Stephenson. 



38. Principle and Applications of the Spectroscope (Illus- 



trations by Lantern) F. P. Venable. 



Read by title : 



39. Oxyiodides of Lead J. L. Borden. 



40. Time of Flowering of Plants (at Chapel Hill) Chas. Phillips. 



41 . Zinc in Drinking Water. F. P. Venable. 



42. Indian Mounds in Eastern North Carolina J. A. Holmes. 



43. Magnetite from Orange county, N. C L. J. Borden. 



44. Measurement of Amethyst Crystals .R. H. Lewis. 



45. Note on Reverted Phosphate ...W. B. Phillips. 



MaV 7d, 1884. 



46. Theory of Tornadoes .. J. W, Gore. 



47. Coal-tar Products F. P. Venable. 



48. History of the Observatory of the Univ. of N. C Chas. Phillips. 



Read by title : 



49. Silk Industry JULIAN Wood. 



50. Medical Practice among Indians Geo. M allett. 



51. Sources of Phosphoric Acid J. C. Roberts. 



