CONTENTS xxix. 



in Dundee Gas Works A diminutive labora- 

 tory Removes to London in 1834 Starts a 

 small chemical works Takes out first patent, 

 1836, for utilising waste lime and liquors from 

 gas works Leaves London The business not 

 a success Takes a small works at Burgh, 

 Cumberland Accidental discovery of an alum 

 process Spence's patent alum process, 1845 

 and 1850 Shale from coal measures Zinc 

 cement and baryta patents Works established 

 at Pendleton, also later at Birmingham and 

 Goole Many and various subjects of patents 

 Attempts to treat the complex ore from the 

 Parys Mine Other metallurgical processes 

 Redonda phosphate process Spence too 

 sanguine 1863, sulpho-cyanide patent 1875, 

 alumino-ferric Unfortunate lawsuit with 

 A. G. Kurtz, St. Helens Peter Spence's 

 tastes literary and aesthetic Yiews on smoke 

 consumption A chimney 600 feet high 

 \Vntilation by tall shafts The Pendleton 

 lawsuit, 1857, necessitates removal to Miles 

 Platting The temperature experiment on 

 iron Another accidental discovery on tem- 

 pt Mature of various solutions Restoration of 

 canal traffic, 1881-2 A pamphlet A 

 supporter of the Manchester Ship Canal His 

 strong religious convictions A remarkable 

 incident An act of generous sympathy 

 Spence a temperance reformer His public 

 spirit He died 5th July, 1883 Aged 78 

 Dr. Alexander Maclaren's testimony ... 249 



