MEMOIRS AND COMMUNICATIONS 
READ TO THE SOCIETY. 
Feb. Gtb, 1827.—On Capillary Attraction, by the Rev. 
J. B. Emmett, Hon. Mem. Y. P. S. 
On Tumuli or “ Twin-Barrows” in the parish of Thixen- 
dale, by the Rev. T. Rankin. 
March Gth.—On the Chromo-Phosphate of Lead, by the 
Rev. W. V. Vernon, F. R. S. Pres. Y. P. S. 
On the Construction of a Reservoir near Scarborough, on 
Geological principles, by William Smith, Civil Engineer, 
Hon. Mem. Y.P. S. 
April 3rd.—On the Graduation of Thermometers, by 
Thomas Donkin, M. Y. P. S. 
OcT. 2nd.—On the History of St. Mary’s Abbey, York, 
by Eust. Strickland, M. Y. P. S. 
A description of the manner in which the female of Sirex 
juvencus provides for the deposit of its eggs, by Thomas 
Allis. 
