CONTENTS. 



OUrrvatio7is on the Advantages arhhis, from the Use of the 

 tVire-gauze Safety-lamp, commovli/ called The Davy. 91) 

 Cn the pretended Priority of Mr. Stevenson's Snf'e-lnmp. 94 

 Answer to Mr. John Farey Sen. and to Dr. John Murray. 104 

 On the Union of Copper with Iron, <^c. . . . . 107 



On the Restoration of Vision, when injured or destroyed in con- 

 sequence of the Cornea having assumed a conical Form. 1 10 

 On the Phcenomena of Platinum and other IVires in inflam- 



mal'le Media. .. .. 120 



Geolog'ual Queries, regarding the Coal Strata, Basaltes, and 

 Red ^larl, of Northumberland and Durhamy and on the Ap- 

 pear mi fs of Coal, &^c. in Lincolnshire. . . . . 122 



On the 'hysiology of Vegetables. .. .. .. 125 



On Asfro-otmospherical Science. . . . . . . 132 



Brief Notice of a Discovery by which Sir H. Davy's Safe-lamp 

 may be made to re-light itself when extinguished in the 



Mine. .. .. 138 



Reply to Mr. Horn 139 



On Mr. Horn's Theory of Vision. .. .. .. 141 



On the Sulphuret of Carbon and on Flame, ^c. . . 142 



Observations on the Combination of Metals tvith Sulphur. 143 

 Cn the Agency of the Carhonate of Magnesia in improving Bread 

 mauefrom the new Flour. . . , . . . , . 161 



On alloying Iron with Manganese. . . . . . . 1C8 



Method of preparing Lime, so as to preserve it for a long Time 

 always ready for Mortar or Whitewash. . . . . 1/2 



Observations on the Changes produced in the new Wheat ; and on 

 the Means of improving the Flour. .. .. 173 



New Theorems for determining the Rate of Interest, and the 

 Value of increasing AnnuitieSy ^c.^c. .. .. 179 



Seme Account of the Solar Spots which appeared during the 



Year 1816 182 



Improvement on the Sliding-Rtde. .. .. .. 187 



ScmeRemarhs upon an urinary Calculus having a Cinder as its 

 Nucleus; with a Notice of other Calculi containing a small 

 Quantity of Carbonate of Lime, &'c. .. .. 188 



Abstract tf*' Instruction concerning the Making of Bread from 

 damaged Corn. .. ,. ,, ,. .. 191 



On Aerial Navigation .. ., .. 197 



Queries on Steam- Boats. . . . , . . , . 200 



On Mr. Worth's Theory of Vision. .. .. .. 202 



Letter from Mr. G. Stephenson of the KilUngivorth Colliery: 

 ivith a few Remarks on his Claim to Priority in the Invention 



ff the Safe-lamp, by the Editor 204 



Answer to some Geological Queries. By N. 5. \YliiCli, Esq. 207 

 Oit, the supposed Repulsion of Electricity. ,, .« 208 



