CONTENTS. 



Abticlb Pao£ 



I. — On the Separate Pressures of the Aqueous and the Gaseous 



portions of the Amosphere. By Mr. Thomas Hopkins 1 



II. — On the Action of Old Coal-pit Water upon Iron, in the Pendleton 



CoUiery. By E. W. Binney, F.G.S 27 



HI. — Some Ancient and Modem Ideas of Sanitary Economy. By 



E. Angus Smith, Ph.D., F.C.S 39 



IV.— Memoir of the late Mr. John Just, of Burj'. By Mr. J. Hablanc. 91 



V. — The Lancashire Geometers and their Writings. By T. T. 



Wilkinson, F.E.A. S 123 



VI. — Use of the Sulpho-Purpuric Acid, (or Red Sulphate of Indigo,) 



in the Dyeing of Worsted and Silk. By Mr. E. Haeffely . . 159 



VII. — On a Case of Poisoning hy Sulphate of Protoxide of Iron. By 



Professor F. Grace Calveut 163 



VIII. — On Supplementary Curves. By Eobeet Finlay, B. A 169 



IX. — On the Influence of Sun-heated Land in producing Ascending 



Atmospheric Currents. By Mr. Thos. Hopkins 199 



List of Donations 215 



List of Officers 217 



last of Members , 318 



