INDEX. 



377 



Ccppfr. To render hard like 



steel, 1)9 



CorresponJcrce. Patent for, 27 1 



Cow-pock. On, ^6, 60, 86, 143, 



236 

 Cucumbers. To preserve, 221 

 CiirauJeau on alum, 269 



Customs of Indian nations, 5, 



io8 



Dartigues on glass, 259 



Deaths, 89 



Desfonta'mes on tea, 123 



Dioptrical iiutrunients of the an- 



tients. On, 14 



Distillation-. Improvement in, 



219, 329 

 Doivn, Patent for cleaning, 191; 



experiments on, 2ii,3<|S 

 Droivriing persons. To assist, 



362 

 Ducks' down. On, 359 



Earthquakes, 89, 184, 281 



Ecotiomicdl So.ieticSf 79, 1 7 7, 

 273,368 

 jLtitvareis's patent, 1 9 r 



■^SS'- On preserving, 218 



Elder-doivn. On, 2 16 



Eleitr icily of metals. On, I20 

 Enamel. Red, to prepare, 159; 

 green, 268 



Epitaph. Premium for, 368 

 jtw/-/6<2r^V patent, 272 



Farey on blasting with gunpow- 

 der, 208 



Feathers. Patent for cleaning, 

 191 ; experiments on, 211, 



J-cvers, malignant and epidemic. 

 To cure, 364 



Fire-places. Patent for improv- 

 ing, 191 



Flour, to make, without grain. 

 Patent for, 271 



Fluiils, non-elastic. Instrument 

 f'T equalizing prtssure and 

 'iJflu of, 289 



Freezing of tvater-p'ipes. On 



preventing, J09 



French National Institute, 8o 



French beans. To preserve, 220 



Fumigation. To prevent the 



pingLie, _ 345, 



I'urs. Patent for preparing, 



271: 



Gay-Lussacs aerial voyage from 



Pciris, 8j 



Cealic language. On, 72 



Geography, 3>93> '855279 



Ger?n nation. On, 307 



Ginger, To preserve, 222 



Glass. Antiquity of, 15; on 



devitrification of, 251^ 



G/«5^ adders, 1 7 



G/a?. Patent for making, igi 



Godon-Saint-Memin on chrome, 



266 



Goose dovjn. On, 359 



Gordon on Gealic and Greek 



languages, 72, 203 



G;v^i(7«'i patent, 191 



Gunpowder. On blasting wit!), 



208 



G///'/j''j patent, 271 



//rt.V. Patent fpr cleaning, 191 ; 

 remaiks on, 216 



Harding's ne-vj planet. Orbit of, 

 70 

 Hatchett en lac, 350 



//«f^V on electricity of metals, 



120 

 Heafhrote's patent, 95 



Hirculaneum MSS. 179 



//(?r/t'j cured by vital air, 1,55 

 Hindostan. On trees of, 316 

 Hislngcr on cerium, 1 54 



History, a prize question, 36Si 

 Hosiery. Patent for, 9; • 



Houghton s patent, 271 



Htune on prussiate of copper, 



Hume's improved process for 



making phosphorus, 160 



Hydraulic )tiipiovenK*i>t, ci2 



Hulrjul... 



