ANDREAS KURTZ 123 



une operation avec sulfat de Soude, charbon 

 de terre et la chaux vif et calcin." 



On the same page is a notice of " chrome 

 de fer" giving the specific gravity of several 

 qualities of ore ; and also an account of an 

 experiment in "distillation d'acide actique." 



It can here be mentioned, that Andreas 

 Kurtz claimed to be the inventor of a very 

 fine vinegar, and that he was the original 

 maker of the article which more than fifty 

 years ago was manufactured by an eminent 

 firm, and which firm is to-day celebrated for 

 the excellence of its manufacture. 



Before passing from his operations in 

 soap-boiling, the following entry may be 

 interesting : "Une Ib. de Soude de Muspratt 

 rich & 70 produit 2 Ib. alkali caustique at 

 38 deg. i Ib. rosin sec et i Ib. huile de lin et 

 4 Ib. liqr caustic a 38 fait un superbe savon 

 jeaun = 6 Ibs. cost 9d. per 6 Ibs. or i %d. per Ib." 



This experiment must have been of a later 

 date than the preceding one as "soude de 

 Muspratt" was not to be had as early as 1818. 



About the year 1820 Kurtz changed his 

 place of residence, left London and came to 

 Manchester, in which town he lived and 

 carried on his business for about ten years. 

 When he came to the north, we find he 



