X CONTENTS. 



On Probable Inference. By Bishop Terrot, . . . 288 



On the Ante- Columbian Discovery of America. By Dr Elton. 

 Communicated by Dr Traill, . . . .291 



On the Equilibrium of Elastic Solids. By Mr James Clerk Maxwell. 

 Communicated by the Secretary, .... 294 



Two Letters from W. E. Logan, Esq., to Earl Cathcart, . 296 



Notes on Practical Chemical Subjects. By Alexander Kemp, Esq. 

 Communicated by Dr Gregory, . . . .298 



Analysis of the Anthracite of the Calton Hill, Edinburgh. By Dr 

 A. Voelcker. Communicated by Dr George Wilson, . 300 



On the Proportion of Fluoride of Calcium present in the Baltic. 

 By Professor Forchamraer of Copenhagen. With some Prelimi- 

 nary Remarks on the presence of Fluorine in different Ocean 

 Waters. By Dr George Wilson, .... 302 



On an Application of the Laws of Numerical Harmonic Ratio to 

 Forms generall}', and particularly to that of the Human Figure. 

 By D. R. Hay, Esq., . . . . . 30-t 



Note regarding the American Electric-Observing Clocks. By Pro- 

 fessor Smyth, ...... 309 



Account of a Remarkable Meteor, seen 19th December 1849. By 

 Professor Forbes, ...... 309 



Notes on the Purification and Properties of Chloroform. By 

 Dr Gregory, ...... 316 



On a Peruvian Musical Instrument, like the ancient Syrinx. By 

 Dr Traill, . . . . . . .325 



Some Remarks on Cometary Physics. By Professor Smyth, . 326 



Abstract of Professor Kelland's Exposition of the Views of D. R. 

 Hay, Esq., on Symmetric Proportion, . . . 328 



On the Constitution of Codeine, and its Products of Decomposition. 

 By Dr Thomas Anderson, ..... 330 



On the Physical and Scottish Statutory Limits of Sea and River, 

 as applicable to Salmon Fisheries. By the Rev. Dr Fleming, 333 



On the Combined ^lotions of the Magnetic Needle, and on the 

 Aurora Borealis. By J. A. Broun, Esq. Communicated by Sir 

 T. M. Brisbane, Bart., . . . . ' . 334 



