CONTENTS. 



Proceedings op the Meeting . 



REPORTS ON THE STATE OF SCIENCE. 



Report on the Geology of North America. Part I. By Henry 

 D. Rogers, F.G.S 1 



Report on the State of our Knowledge of the Laws of Contagion. 

 By William Henry, M.D., F.R.S., &c., late Physician to the 

 Manchester Royal Infirmary and Fever -Wards 67 



Report on Animal Physiology ; comprising a Review of the Pro- 

 gress and Present State of Theory, and of our Information re- 

 specting the Blood, and the Powers which circulate it. By 

 William Clark, M.D., F.R.C., F.G.S., F.C.P.S., late Fellow 

 of Trinity College, and Professor of Anatomy in the University 

 of Cambridge 95 



Report on the Recent Progress and Present State of Zoology. By 

 the Rev. Leonard Jenyns, M.A., F.L.S., F.Z.S., F.C.P.S. . . 143 



Report on the Theory of Capillary Attraction. By the Rev. James 

 Challis, late Fellow of Trinity College, Cambridge 253 



Report on the Progress and Present State of Physical Optics. 

 By the Rev. Humphrey Lloyd, A.M., M.R.I. A., Fellow of 

 Trinity College, and Professor of Natural and Experimental 

 Philosophy in the University of Dublin 295 



Report on the Progress and Present State of our Knowledge of 

 Hydraulics as a Branch of Engineering. Part II. By George 

 Rennie, Esq., F.R.S., Acad. Reg. Sc. Turin. Corresp., &c. &c. 415 



TRANSACTIONS OF THE SECTIONS. 



I. Mathematics and Physics. 



Professor Hamilton on the Application to Dynamics of a General 

 Mathematical Method previously applied to Optics 513 



Professor Hamilton on Conjugate Functions, or Algebraic Couples, 

 as tending to illustrate generally the Doctrine of Imaginary 

 Quantities, and as confirming the Results of Mr. Graves re- 

 specting the Existence of Two independent Integers in the com- 

 plete expression of an Imaginary Logarithm 519 



