102 FUNDAMENTALS OF SUBM IC ROSC OP I C MORPHOLOGY 



TABLE XII 



PARTICLE SIZE A OF GOLD AND SILVER CRYSTALS 



EMBEDDED IN FIBRES 



It is clear that not all cellulose rodlets with a cross-section of about 

 50 A can be surrounded by spaces 100 A wide, as otherwise the dis- 

 crepancy in density would be much greater still. Furthermore, the 

 phenomena of swelling require very narrow intermicellar spaces of the 







A 



I 



•/- 





Fig. 70. Photometer curve of hemp fibres stained with gold (the distance and breadth ot 

 the interferences are magnified 2.0 times as compared with Fig. 69). From the breadth at 

 half-maximum of the dcnsitj' peaks the diameter yl of the embedded gold crystals can be 

 calculated (from Frey-Wyssling, 1937a). 



order of 10 A, into which the water can penetrate, pushing the cellulose 

 rodlets apart. In dyed ramie fibres there must therefore be two cate- 

 gories of submicroscopic spaces, viz., i. narrow intermicellar spaces of 



