ANDREAS KURTZ 121 



ein Stein und wenn ich sie analysirte war sie 

 14^ alkalimetrique in 100 seif. 

 Yellow soap is made with : 



Barilla 18 lbs.\ g 



Bar' 



oil 



Rosin 

 Balmoil 



These extracts, selected from a considerable 

 number of entries, must suffice to indicate the 

 subject on which Kurtz was at that period at 

 work, and the way in which he used to record 

 his operations. Amongst the same memo- 

 randa are sketches of apparatus, descriptions 

 and dimensions of plants, analyses and 

 examinations of materials employed, exact 

 records of temperatures, of strength of 

 solutions and liquors, in degree (Baum), 

 and the time which various operations 

 required. Here and there also are details of 

 cost. These facts are carefully written, 

 occasionally in English, but more frequently in 

 French and German, his thoughts seemed to 

 have worked indiscriminately in both these 

 languages; for grammatical construction, his 

 French appears more correct than his 



