426 * INDEX. 



Vorvz (M.,) geometrical process of, for the division of a right 

 line, 157-160 



Warming of houses and other buildings, Mr. Perkins's plan for, 



336. Mr. Silvester's, 337, 338. 

 Water. — Notice of an optical instrument for examinations under 



■water, 167. Impermeability of glass to water demonstrated, 



168. Source of the exhalation of water during respiration, 192 

 Weighing Machines, temporary contrivance for, 164 

 Wheels for carriages, observations on the nature and advantages 



of, 95-98 

 Wheiuell (W., esq.,) on the method of calculating the angles made 



by any planes of crystals, J^nd the laws according to which they 



are formed, 325, 326 

 Wines, qualities of, how affected, 118, 119. Account of the 



management of wines by the ancients, 119-123. Of the 



wines of France, 125-129. Of Spain and Portugal, 129, 130. 



Of Germany and Hungary, 130-132. Of Italy and Greece, 132, 



133. Of Madeira, 133. Of the Canary Isles, 134. Of the 



Cape of Good Hope, ihid. Persian wines, ibid. Vinous liquors 



how purified from fruits, 399 

 Wires, vibration of, in the air, 379 - 



Wohler (M.,) cyanate of potash prepared by, 394 

 Woolnorth (Lieut. J. C.,) analysis, by of the Holy-Well water, near 



Cartmel, 187, 188 



Young (Dr.,) Method of, for computing an observed occultation, 

 343-346. Remarks on his table of astronomical refraction, 

 369, 370. Conjectures on an ancient inscription found at 

 Meroe, 304 



Zeise (M.,) observations and experiments of, on the re-action of 

 sulphuret of carbon and ammonia, and on the combinations 

 thence resulting, 149-155 



Zinc, properties of an amalgam of, 181 



Zirconitwi, process for procuring, 157 



