1839. 



striking chemical characters of that substance. 

 — Mr. Brett. 

 (2) On the roots of Unity, as signs of affection 

 of Algebraic Symbols, when applied to Geo- 

 metry. — Rev. Dr. Tattershall. 

 Feb. 4. — On certain elements of National Character. — 

 Dr. Bryce. 

 „ 18. — Geological Account of a Cave, near Holywell. — 

 Mr. Lucas. 

 March 18. — On the Sense of Muscular Motion. — Dr. 



Carson. 

 April 8. — On Mineral Veins. — Mr. M. Phillips. 

 „ 22. — Proposal for the Improvement of the Channel 

 of the Mersey. — Mr. S. Gibson. 



SESSION XXIX. 



N v. 4. — On the Rapid Changes which take place at the 

 entrance of the River Mersey ; and tbe means 

 now practised for establishing an easy and 

 direct Access for vessels resorting thereto. — 

 Mr. J. B. Yates. 

 ,. 18. — (1) An Account of Mr. Cooke's Electro-mag- 

 netic Telegraph, in operation on the Great 

 Western Railway. — Dr. Reynolds. 

 (2) On the Influence of the Mind on the Body, 

 principally with regard to Disease. — Mr. Banner. 

 Dec. 2. — An Exposition of the Construction and Operation 

 of the Anemometer and Rain Guage. — Rev. J. 

 Martineau. 

 „ 80. — On Empiricism, Ancient and Modern ; its 



Origin and Progress. — Dr. Mackintosh, 

 1840. 

 Jan. 13. — On the Revenue of a Country, considered in refer- 

 ence to the sources, and the mode of Collection ; 

 with the view of determining the relative advan- 

 tages to a People, of direct and indirect taxa- 

 tion. — Mr. Swinton Boult. 

 „ 27. — On the Construction and degree of Accuracy, 

 attainable in Astronomical Instruments, for 

 measuring time. — Mr. Wm. Lassell. Jan. 



