[ 901 | 
WAVE NUMBER (CM-!) 
4000 3000 2000 1500 1000 900 800 700 
ALASKA | 
KREISCHERVILLE, NY. 
i | J J 
1 i i 
! 
6 7 8 9 10 1] 12 13 14 15 
WAVELENGTH (MICRONS) 
Infrared spectra of Cretaceous amber from Alaska Types I and II and Kreischerville, N.Y. 
el 
bh 
tht 
AIX Sivi1g 
