[ CLL J 
WAVE NUMBER (CM-!) 
4000 3000 2000 1500 1000 900 800 700 
l 
CHIAPAS, MEXICO eee 
7 a 
l BI 1 l L | | 1 ! 1 1 
4 5 6 7 8 9 10 1] 12 13 14 
WAVELENGTH (MICRONS) 
Infrared spectra of Oligo-Miocene amber from Chiapas, Mexico, Types I, II and III. 
15 
HWIXN &tv1d 
