384 INDEX. 



/^arti'j improvement of Hadley's Wolfs-hane used for poisoning- 

 sextant, 123 arrows, 163 

 Water. Action of, on land, 35, JVollaston on spectacles, 165 

 370; on soils, 82 Wool. Improvement of, 141; 

 Wells. Improved bucket for, of Cachemire sheep, 234 

 271 PFbrcester (marquis of), on his 

 /r^ra^ On making spirits from, inventions, 61 

 110,316 /^rmj absorb oxygen, 257 

 tf^hi/e herrings, I4> ^7 



i^///fl/»W J submarine proposal, Teasi. Hint for preserving, 316 



61 Tellaiv fever. To cure, 190 



END OF THE EIGHTEENTH VOLUME. 



<i-:M 



Taylor, Printer, Blrck-Horse-Court, 

 Fleet- Street. 



