GENERAL ^MICROSCOPY 



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Fig. 5a. Synthetic fiber structures (from top Fig. 5b. Synthetic fiber structures (from top 



down): Orion, phase contrast, cross section, 450X. down): Kuralon, phase contrast, longitudinal, 



Orion, phase contrast, longitudinal, 450X. Dynel, 225X. Perlon, phase contrast, cross section, 450X. 



phase contrast, cross section, 450X. Kuralon, Dacron, phase contrast, cross section, 225X. 



phase contrast, cross section, 450X. Dacron, phase contrast, longitudinal, 225X. 



362 



