Index. 
Thornton’s, Ur. account of the method of 
obtaining- patents, 274. 
Tram plates, for rail roads, improved, 
368. 
V. 
Varnish, a permanent and elastic, for 
hats, gaiters, &c. 62. 
Varty’s mode of securing carriage 
wheels, 378. 
V egetation, to preserve seeds in a fit 
state for, 124. 
Vegetables, easy mode of converting 
into manure, 126. 
Verdigrise, verdet, &c. observations on 
making, 141. 
Vesuvius, account of a descent into its 
crater, 12. 
Vineyards and wines of Champagne, 
memoir on the, 1, 81, 161. 
W. 
Waistell’s improved field gate, 475. 
Walker, on purifying oil for chronome- 
ters, 187. 
Ward’s method of preventing injury in 
preparing white lead, 453. 
Water, machine for raising it to any 
height, 26. 
a cheap machine to raise it, 38. 
to preserve sweet, in long voy- 
ages, 59- 
wheel, description of Mr. Be- 
sant’s, 183. 
Weather boarding, composition for, 208. 
Williams’ mode of securing the beams 
of ships without knees, &c. 376. 
Wines of Champagne, memoir on, 1, 81, 
161. 
Window shutters and door pannels, to 
secure, 185. 
Wingfield, on increasing the charging 
capacity of electrical jars, 193. 
Wollaston’s description of the camera 
lucida, 267. 
Wood, on its decay, and the prevention 
of, 298, 321. 
Beckmann’s observations and 
experiments on staining, 127 
