3?3 



I N D E X. 



Deyeitx on distilling waters from 

 plants, 3 



Distillation. On, 3 



Distilled waters. A prize ques- 

 tion, 30 

 Dodds patent, 189 

 Donkii's patent, 19 ' 

 Drappier on spathic iron ore, 31 

 Dubois on Guinea worm and 

 scorpions, 97 

 Dyeing Adrianople red, 8 



Electricity. On, 72 ; curious ex- 

 periments in, 360 

 Electuaries. A prize question, 

 •37° 

 Emetic. A prize question, 369 

 Erfurt Academy, B6 

 £//w. On, 372 

 Extracts. A prize question, 370 



Farey on stratification and tun- 

 nels, 44 



Feathers. To free, from their 

 o ; l, 67 ; patent for, 375 



Fermentation of grains. On, 176, 

 219 



Fmsbury Dispatsdry, 346 



Fires. Patent for preventing, 



^375 

 Fish oil. To refine, 51 



Flood. Prize question on the, 



2/3 

 Ford's patent, 374 



Fossils. On, 94 



Fetircroy on germination and fer- 

 mentation, 176, 219; on ivo- 

 ry, 265 

 Fcurdrinier's patent, 191 

 French National Institute, 371 

 Fricker' s patent, 2b 7 



Galvanico-magnctic esper. 368 



Galvanism, iiiugnatelli on, 57, 



130; Society £t Paris, 260; 



Grotthius on, 328; Gardner 



on, 364 



Gardeur's paper statuary, 339 



Girdner on Galvanism, 364 



Gated. Academy of, 183 



Germination of graius. On, 1 76, 



2 19 



Gilpin's crane, 252 



Glass. Patent for engraving on, 



190 



Grenoble. Society of Arts an<*- 



Sciences, 278 



Grotthius on Galvanism, 328 

 Guaiacum. Chemical experiments 



on, IO j 



Guinea worm. Remedy for, 97 

 Guns. Patent for, 375 



Guyton on a recent production 



of chalcedony, 34° 



G-vcynet's patent, 190 



Haerlem Society, 37 1 



Hair. Memoir on, 3)* 



Hall's (Sir J.) experiments on 

 heat, 10, 143, 103 



Halo. A singular, 282- 



Hanomer. Particulars respecting, 

 a8i 



Heard's patent, J 90 



Heat. Ex per. on, 10, T43, J 93 

 Henry's Epitome of Chemistry, 76 

 Herbert's improved bolt, 259 

 Hydrureti produced by Galva- 

 nism, 13 l 



Infusions. A prize question, 370 



Ivory. Experiments on, 26> 



Jupiter. On satellites and belts 



of, J 74 



Kermcs. A prize question, 369 

 Ktaproth on sulphuric acid, 289 

 Knig ht on vegetation, 122 



Lamb's patent, 191 



Lanel-surveying instrument, 163 

 Latrobe on wasps, 236 



Lead. On oxides of, 365 



Learned Societies, 7 J, 182, 26b, 



Le Caan's check for carriage 

 wheels, 263 



Ltctures, 284,373 



Leicester's patent, 190 



Linseed oil. To whiten, 5$ 



Londou 



