Tafel IV b. 



Druck = 0.090 mm. 



Druck = 0.125 mm. 



Druck = 0.30 mm. 



-i~^- 



fc=K 



.*/ 



■ii 



\ L T ' 



10 20 yo 40 50 2 10 



30 4(J 50 60 70 80 



100 10 20 80 40 50 00 70 



90 200 10 20 



