INDEX. 



Duncan, Dr. on cinchona, zz^-^—On 

 gum-kino, 234 



E. 



Earthquakes, their efFefts in South Ame- 

 rica, 24a 



Edelcrantz, Sir A. N. his method of rai- 

 ling water for the purpofes of refrigera- 

 tion, 41 ■ 



Edwards, Mr. an erroneous affertion of 

 his refpefling the eye-ftop of refledling 

 telefcopes, 248 



Efflorefcences on walls, experiments and 

 obfervations on, 109 — Enquiries into 

 the origin of, 112 



Eledricity of the oppofite poles of the 

 galvanic pile, experiments on its nature 

 and effefts, 222 



Inglefieid, S?r H. C. his account of two 

 halos with parhelia, 54 



Eudiometric apparatus conftrufted and 

 ufed by Dr. Hope, 61 



> • ' ' properties of phofphuret of 



fulphur, 4 



Evaporating furnaces, on the confl:ru£tion 

 of, 114 



Evaporation of liquids, experimental eflays 

 on, 257 



Excrements of mammiferous animals, are 

 . analogous to ambergris and muik, 

 iSo 



Extraftive matter of vegetables, is moil: 

 abundant in the middle bark, 35-^-Is 

 abforbed during the procefs of tanning, 

 39 — Is probably the caufe of foftnefs in 

 fkins, 40 — Mutual action with tan- 

 nin, ib. 



Extreme branch grafting, a method of re- 

 ftoring decayed tees, 124 — ^General 

 preparation and management, J26— 

 Teftimonials of its fuccefs, 128 



Eye, its funftions are fubjeft to the laws 

 of optics, 21 — The chemical hiftory of 



its humours limited, 22-— 'Experiments 

 on the humours of, in different ani- 

 mals, ib. 

 Eye-ftop of reflefting telefcopes, cor- 

 redlion of an error refpeiling the, 

 247 



F. 



Fairrnan, Mr. on the reftoraticn of de<. 

 cayed trees by a new method of graft- 

 ing, 124 



Fafcolomes, a new fpccies of quadrupeds, 

 defcription of, 141 



Febrifuge principle of cinchona, memoir 

 on, J56 



Feeding of leather phllofophically account- 

 ed for, 40 



Fermentation, enquiries into the nature 

 aud caufes of, 221 



Fichte, 175 



Flax, method of giving the appearance of' 

 cotton to, 252 



Fluidity may confift in the change of the 

 capjcity of bodies for caloric, 28 



Fogs do not impede telefcopic vlfion, 

 10 



Fofiil bones, large ones found in both 

 Americas, 247 



Fourcroy, 22, 24, 94, 186 — A mlftake 

 of his reftified, 133 



Froft, its _effe6ls on telefcopic vifioiij 

 J2 



Fruit-trees, new method of reftoring de- 

 cayed, 124 



Fuel, wafte of its confumption in fur- 

 naces, 114 



Funcke, 63 



Furnaces, evaporating, on the conftruc- 

 tion of, 114 — Caufe of the defedive 

 aftion of, 115 — General remarks, 117 

 — Dcfcription of a new, ib. 



, portable, improvement in Dr. 



Black's, 273 



C^i. 



