Erratum in Vol. 30. 



UNIVEESITY COLLEGE, LONDON. 



PROFESSOR WILLIAMSON'S COURSE of LECTURES on ORGANIC 

 CHEMISTRY will commence on Thursday, the 8th of February. The Course 

 will consist of about Thirty Lectures, to be delivered on Mondays, Tuesdays, Wed- 

 nesdays, Thursdays, and Fridays, from 11 to 12 o'clock. Fee for the Course, £2. 

 Augustus Dje Morgan, Dean of the Faculty of Arts. 

 Charles C. Atkinson, Secretary to the Council. 

 University College, January 17, 1866. 



Just published, price 25s., with Twenty-three Plates, Vol. XXIV. Part I. of the 



TRANSACTIONS OP THE ROYAL SOCIETY OP EDINBURGH. 



Contents. 

 I. On the Principle of Onomatopoeia in Language. By Professor Blackie. 

 II. On the Cause and Cure of Cataract. By Sir David Brewster, K.H., F.R.S. 



III. On Hemiopsy, or Half- Vision. By the Same. 



IV. Miscellaneous Observations on the Blood. By John Davy, M.D., F.R.S. 

 Lond. and Edin., &c. 



V. A Study of Trilinear Coordinates ; being a Consecutive Series of Seventy-two 

 Propositions in Transversals. By the Rev. Hugh Martin, M.A., Free Grey- 

 friars, Edinburgh. 



VI. Note on Confocal Conic Sections. By H. F. Talbot, Esq. 



VII. On the Motion of a Heavy Body along the Circumference of a Circle. By 

 Edward Sang, Esq. 



VIII. Experimental Inquiry into the Laws of the Conduction of Heat in Bars. 

 Part II. On the Conductivity of Wrought Iron, deduced from the experiments 

 of 1851. By James D. Forbes, D.C.L., LL.D., F.R.S., V.P.R.S.E., Principal 

 of St. Salvator and St. Leonard's College, St. Andrews, and Corresponding 

 Member of the Institute of France. 



TX. Some Observations on the Cuticle in relation to Evaporation. Bv John 



Davy, M.D., F.R.S. Lond. and Edin. 

 X. On the Contact of the Loops of Epicycloidal Curves. By Edward Sang, Esq. 

 XL Researches on Malfatti's Problem. By H. F. Talbot, Esq. 



XII. On the Law of Frequency of Error. By Professor Tait. 



XIII. On the Application of Hamilton's Characteristic Function to Special Cases 

 of Constraint. By Professor Tait. 



XIV. On the Tertiary Coals of New Zealand. By W. Lauder Lindsay, M.D., 

 F.L.S., &c, Honorary Fellow of the Philosophical Institute of Canterbury, New 

 Zealand. 



XV. On Variability in Human Structure, with Illustrations from the Flexor 

 Muscles of the Fingers and Toes. By William Turner, M.B. (Lond.), F.R.S.E., 

 Senior Demonstrator of Anatomy in the University of Edinburgh. 



XVI. Examination of the Storms of Wind which occurred in Europe during 

 October, November, and December 1863. By Alexander Buchan, M.A., Secre- 

 tary to the Scottish Meteorological Society. 



XVII. On the Celtic Topography of Scotland, and the Dialectic Differences indi- 

 cated by it. By W. F.. Skene, Esq. 



XVIII. On the Bands formed by the Superposition of Paragenic Spectra produced 

 by the Grooved Surfaces of Glass and Steel. — Part I. By Sir David Brewster 

 K.H., F.R.S. Lond. and Edin. 



XIX. On the Bands formed by the Superposition of Paragenic Spectra produced 

 by the Grooved Surfaces of Glass and Steel.— Part II. By the Same. 



Edinburgh : R. Grant and Son, 54 Prince's Street. 

 London : Williams and Norgate. 



[ADVERTISEMENTS continued on 3rd page of Cover. 



