380 
Fermin. To destroy, gt 
Vision, E. Walker on, 29; cu- 
rious facts concerning, © 364 
Voyages, 90, 92, 351s 352 
Wazgons. Patent, 94 
Walker on vision, 29 
Watches. On, 40, 129 
Water. On condensation of, 273 
Weaving. Patent for, 286 
Wedgwood’s patent, 94 
Weevils. To destroy, 91 
Weighing machine. Patent, 374 
Whalebone. Patent for using, 191 
INDEX,, 
Vegetation. Experiments on, 317 
White’s patent, 95 
White swelling cured by vital air, 
7° 
Wlliamson’s patent, — 286 
Wines. To detect adulterations 
of, + : 362 
Wollaston on percussion, 2293 
patent to, 286 
Woolf’s piston for steam-engines, 
316 
Writings. Patent for ce 
duplicates of, ~ 
Wyatt’s patent for separating gold 
and silver from copper, &c. 
ie 
END OF THE TWENTY-SIXTH VOLUME. 
Erratum.—Page 4, line 11 from the bottom, i 
for oil of marmite read Soiled oil. 
Printed by R. Taylor and Co., &8; Shoe Lane, Fleet Streets 
