476 



INDEX. 



Syphon. Improved, 60, 61 



Tea. Lettsom on, 229 



Thermometer. Tlie differential, 31 ; 

 Walker's, 136; scales, 136 



Tkorrison on an equation io Laplace, 

 357 

 Thomsnn's gun-lock, 308 



Transparent paper for artists, 233 

 TrigonnmetricaL survey, Mtidge'a. Re- 

 marks on, 20, 90, 178 

 Truss Society, 77 

 Tutkill on con version of fecula into 

 sugar, 156 

 Urine of animals. Analyses of, 17 

 faccination. Beneficial effects of, at 

 Norwich, 72 

 Vapours. On heat developed in con- 

 densation of, 285 

 Vauquelhis analysis of urinec, 17 

 Venetian school of painting, 17S 

 Vinegar, to render colourless, 129 

 k'iiion. Blagden on, 138 ; Adams on 

 restored, 205 

 Voxel's exper. on conversion of starch 

 into sugar, 156 

 Volcemic eruption in St. Vincent, 139 

 Voltaic conductor. Mercurial, 15 



Walker on geogr. potition of Lyna, 

 Norfolk, 331 



Ifalker (E.) on electrometer 

 HUker's phrlosophy of arithmetic,47 

 tValker's thermometer, 136 



Wax, On heat developed in burning, 

 293 

 Way's bread of wheat flour and po- 

 tatoes, 265 

 Wells on negro co'our, S02 

 White's equation B of M^chanique 

 Celeste, 9 

 White lead. Making of, 253 

 Wilson's artificial stone, 273 

 Wire, Fine. Wollaston's method of 

 drawing, 139 

 Wollaston's camera obscura, 124; 

 Jones's observations on, 247 ; pro- 

 duction of fine wire, 139; chryo- 

 phorus, 155; single lens micro- 

 meter, 222 

 Wright on the passions, 53, 140 

 Yellow oxide of lead. Components of,7 

 Yvung on medical effects of climates, 

 210, 255 

 Zoology, 387 



ERRATA. 



Page 151, line 18, fur credited read debited; ibid, line 27,_/or proportion* 

 read proprietors; page 234, line 17, for oxymuriate read oxymuriatic; 

 page 3'2 1 , line 9 from bottom, yor and their forces read and these forces; 

 page 32'2, line 1, /or 10 read 5; page 322, line 12, /or beams read beam; 

 page 331, line 3, for filled read fitted ; page 387, line 2, for havinj beea 

 read be. 



JEND OF TH 



FIRST VOLUME. 



Printed iy Richard Taylor and Co., Shoe Lane, Ltndvn. 



