INDEX. 



Sbrs, fign-i of the weather from, 152— 

 Account cf the changes in the relative 

 pofitioii of double, 210, 252 — Theory 

 of the motion of, 2iir-ObferTations 

 and inferences refpedling tlie changes of 

 their relative fituation, 214 

 Station pointer, defcription and ufe of, 1 

 Steam, its firft application to mechanifm, 



311 



■■ — digeder, a new one, 161 



engine, enquiries concerning, 310 



Steef, Damafcus, experiment to imitate, 

 120 



Stockwell, Mr. on the properties of the 

 chay root, 294 



Stodart, Mr, on the fabrication of Da- 

 mafcus fword blades, 120 



Strufturer, three mechanical, not com* 

 monly noticed, 50 



Sulphur and phofphorus, method of unit- 

 ing without danger, 58 



Sun, thefigns of the weather from, 150 



Sun-flower, its cultivation recommended, 

 128 



Sweeping chimnies by air, apparatus for, 

 246 



Symonds, Dr. 309 



Syphon-engine for fupplylng worm tubs, 

 191 



Table of the force of vapour and ©f the 

 evaporating force at different temper- 

 atures, II 



Thaw, figns of, 155 



Thenard's memoir on vinous fermentation, 

 33 — Difcovery, of a blue e«jual to ultra- 

 marine, 76 



Theorems relative to the figure of the 

 earth, 67, lot, 167 



Thompfon, Dr. 89 



Thunder, its effefts on beer and cream, 

 occafioned by tremulous motion, 122 

 —Signs of, 155 



Timber, oak, obfervatlons on the cul- 

 ture and growth of, 17 



Time-keepers, are advantageoufly em- 

 ployed in finding the longitude, 203—* 

 Jewelled holes injurious to, 204 



Toad, its fafcinating power denied, 279 



T'jngue, obfervations on its ftrHfture, 47 

 — Hiftory of a cafe in which a portion 

 was fuccefs fully removed, 48 — Little 

 irritability of its internal ftrudlure, 49 — • 

 Great advantage of this knowledge ia 

 cancerous difpofitions, 50 



Tromfdorff,. Prof. 319 



U, 



Ultramarine, difcovery of a blue equal to, 



76 

 Urine, diabetic, undergoes fermentation, 



37 



V. 



Valve, fafety, for digefters, 164 



Van den Sande on the efHorefcence and 

 decompofition of glafs tubes, 306 



Van Mon?, 118 



Vapour, atmofpheric, experiment to de- 

 termine its force, 9 



- ■■-• aqueous, is proportional to the 



evaporation at fimilar temperatures, 8 — 

 Caufe of the inaccuracy in De Sauf- 

 fure's table of the weights of, 16 



Varnifli for the plates of eledrical ma- 

 chines, 125 



Vauquelin, 63, n8 



Vegetable fait and acid, new, 129 



Vertigo in fheep, caufed by an hydatid in 

 the head, 318— Queftion refpedlingthe 

 bed method of treating, 319 



Vinous fermentation, memoir on, 33 



Volatile bodies, inftances of their fix- 

 ation, lOI 



Volcanoes, obfervations on thofe extinft 

 in the environs of Cobientz, 136 



Volta, 288 



Vofmaer, 282 



Walker, 



