1875.] On the Expansion of Sea-water by Heat. 159 



De La Eue (Warren), F.E.S. Auxiliary Tables for determining the 

 Angle of Position of the Sun's Axis, and the Latitude and Longitude 

 of the Earth referred to the Sun's Equator. 4to. London 1875 

 (3 copies). The Author. 



Kerz (Ferdinand) Die Entstehung des Sonnen systems nach der La- 

 place'schen Hypothese in verschiedenen neuen Eichtungen ausge- 

 fiihrt. 8vo. Darmstadt 1875. The Author. 



M'Lachlan (E.) A Monographic Eevision and Synopsis of the Tricho- 

 ptera of the European Eauna. Part 3. 8vo. 1875. The Author. 



Eoss (Dr. A. M.) The Birds of Canada. Second Edition. 12mo. Toronto 

 1872. The Butterflies and Moths of Canada. 12mo. 1873. A 

 Classified Catalogue of the Birds of Canada. 12mo. 1872. The 

 Eorest Trees of Canada. 12mo. 1875. The Flora of Canada. 12mo. 

 1875. Canadian Illustrated News, Oct. 3, 1874. The Author. 



Suess (Eduard) Die Entstehung der Alpen. 8vo. Wien 1875. 



The Author. 



Vinchon-Thiesset (A.) La Cause des Eifets. 8vo. Saint Quentin 1875. 



The Author. 



Bronze Medals of Joseph Black, M.D., and William Hunter, M.D., by 

 Macphail of Glasgow.] Dr. Sharpey, F.E.S. 



January 6, 1876. 



Dr. J. DALTON HOOKER, C.B., President, in the Chair. 



The Presents received were laid on the table, and thanks ordered for 

 them. 



The following Papers were read : — 



I. " On the Expansion of Sea-water by Heat." By T. E. Thorpe, 

 Ph.D., and A. W. Eucker, M.A. (Fellow of Brasenose Col- 

 lege, Oxford), Professors of Chemistry and Physics in the 

 Yorkshire College of Science. Communicated by W. B s 

 Carpenter, M.D., LL.D., F.E.S. Eeceived November 12, 



1875. 



(Abstract.) 



The extensive contributions which have recently been made to the 

 physical history of the ocean have shown the desirability of exact 

 knowledge of the relations of sea-water to heat. We have accordingly 

 thought it worth while to make observations in order to determine the 

 law of the thermal expansion of sea-water. 



VOL. XXIY. N 



