CONTENTS. 



An Analysis of the Mineral Waters of Dunblane and Pit~ 

 caithly 264 



A Reply to Dr. W. H. Gilby; with some additional Facts 

 regarding the Stratification of Britain. .. .. 278 



On the Cosmogony of Moses ; -with some preliminary QhservU" 

 tions on Dr. Gilby's Communication in Number 209- 285 



Means cfpreve7iting the Development and Propagation of con" 

 tagious Typhus. . . . . . . . . . . 290 



On a Suhstance to ivhich the Name o/'Inuline has been given. 292 



Some further Particulars respecting Mr. Woolf's Steam-En- 

 gine 295 



Determination of the haws according to which Light is polarized 

 at the Surface of the Metals. . , . . . . 297 



On the Gold of the Coast of Guinea, and Methods of obtaining 

 it in the Country. , . . . . . . , , . 302 



Statistical Account of the Quicksilver Mines ofldria in Illyria. 



Zm, 330 



Experiments lending to prove the Possibility of causing Bal- 

 loons to deviate cinsideral ly from the general Direction of 

 the Current of Wind -which carries them along in the At- 

 mosphere. . . . . .. .. ., .. 321 



Some Experiments on a solid Compound of Iodine and Oxygen, 

 and on its chemical Agencies. .. .. .. 345 



Observations on Dr. Thomson's Critique on Mr. Seppings's 

 new Method of Ship -building. .. .. .. 352 



On a neiv Species of coloured Fringes produced by the Be/lection 

 of Light between two Flutes of parallel Glass of equal Thick- 

 ness. . . . . . . . , . . . . . , 353 



Observations and Experiments on the new Species of coloured 

 Fringes discovered by Dr. Brewster, in the Lirrht reflected 

 between two Plates of parallel Glass of equal Thickness. 360 



Dr. GiLBY in Reply to Mr. Farev on the Stratifcatiori of 

 Great Britain. .. .. .. .. .. 361 



Further analytical Experiments relative to the Constitution of 

 the prussic, oftheferruretltd chyazic, and of the sulphuretted 

 chyazic Acids ; and to that of their Salt t; together with the 

 Application of the Atomic Theory to the Analyses of those 

 Bodies. . . . . . . . . . , . . 365 



Dreadful Accident occasioned by thfi Explosion of a Boiler at 

 iVir. Constant's Sugar-House in ffdl-Street on the loth of 

 November. . . . . . . , . . . . . 872 



On the Franklinian Theory of the Ley den Jar ; ivith Remarks 

 on Mr. Douoy an' s Experiments. .. .. ., 401 



