Vlll 



On Circulating Functions, and on the Integration of a Class of Equa- 

 tions of Finite Differences into whicli they enter as Coefficients. 

 By John F. W. Herschel, Esq. F.R.S page 89 



On the Fallacy of the Experiments in which Water is said to have 

 been formed by the Decomposition of Chlorine. By Sir Humphry 

 Davy, LL.D. F.R.S 89 



The Croonian Lecture. On the Changes the Blood undergoes in the 

 act of Coagulation. By Sir Everard Home, Bart. V.P.R.S 90 



Some Additions to the Croonian Lecture, on the Changes the Blood 

 undergoes in the Act of Coagulation. By Sir Everard Home, Bart. 

 V.P.R.S 91 



On the Laws of Polarization and Double Refraction in regularly Cry- 

 stallized Bodies. By David Brewster, LL.D. F.R.S. L. &E 92 



On the Parallax of certain fixed Stars. By the Rev. John Brinkley, 

 D.D. F.R.S 93 



On the Urinary Organs and Secretions of some of the Amphibia. By 

 John Davy, M.D. F.R.S 94 



On a Mai-conformation of the Uterine System in Women ; and on 

 some Physiological Conclusions to be derived from it. In a Letter 

 to Sir Everard Home, Bart. V.P.R.S. from A. B. Granville, M.D. 

 F.R.S. F.L.S 95 



New Experiments on some of the Combinations of Phosphorus. By 

 Sir H. Davy, LL.D. F.R.S. V.P.R.1 95 



New Experimental Researches on some of the leading Doctrines of 

 Caloric ; particularly on the Relation between the Elasticity, Tem- 

 perature, and latent Heat of different Vapours ; and on Thermo- 

 metric Admeasurement and Capacity. By Andrew Ure, M.D 97 



Observations on the Heights of Mountains in the North of England. 

 By Thomas Greatorex, Esq. F.L.S 98 



On the Different Methods of Constructing a Catalogue of fixed Stars. 

 By J. Pond, Esq. F.R.S 99 



A Description of the Teeth of the Delphinus Gangeticus. By Sir 

 Everard Home, Bart. V.P.R.S 99 



Description of an Acid Principle prepared from the Lithic or Uric 

 Acid. By William Prout, M.D 100 



Astronomical Observations and Experiments, selected for the purpose 

 of ascertaining the relative Distances of Clusters of Stars, and of in- 

 vestigating how far the Power of our Telescopes may be expected 

 to reach into Space, when directed to ambiguous Celestial Objects. 

 By Sir William Herschel, Knt. Guelp. LL.D. F.R.S 100 



On the Structure of the Poisonous Fangs of Serpents. By Thomas 

 Smith, Esq. F.R.S 101 



On the Parallax of * Aquilae. By John Pond, Esq. F.R.S 101 



On the Parallax 'of the Fixed Stars in Right Ascension. By John 

 Pond, Esq. F.R.S 102 



An Abstract of the Results deduced from the Measurement of an Arc 

 on the Meridian, extending from Latitude 8 9' 38"-4, to Latitude 

 18 3' 23"-6 N., being an Amplitude of 9 53' 45"-2. By Lieut.- 

 Col. William Lambton, F.R.S 102 



