46 



SUBCELLULAR PARTICLES 



Fig. 3. Ultraviolet spectral types 

 in synthetic lignins. 



\ (M/i) 



240 



260 



280 



300 



Table 3. Spectral features of lignins formed on water-soluble matrix substances 



* As defined by fig. 3. 



SPECTRAL CLASS * 

 FRACTION SOLUBLE IN 



Table 4. Spectral features of lignins formed on water-insoluble matrix substances 



SPECTRAL CLASS * 

 FRACTION SOLUBLE IN 



Cotton cord 



Cotton (absorbent) 



Milkweed fiber 



Filter paper (no. i ) 



Filter paper (no. 411) 



loiter paper (acetylated no. 40) 



Chitin (acid washed) 



("hitin (deacetylated) 



Chitin (alkali washed) 



* As defined by fig. 3. f Number in parentheses indicates position of maximum or range 

 of shoulder. 



