J t 



Fig. 14. Electrophoretic diagram of the turnip yellow 

 mosaic virus proteins at pH 5.38. A, ascemlini; boundary: 

 B, descending boundary. Concentration, ;! mg./ml. 







f. 



^^7S>^^ 



Fig. 16. Ultraviolet photograpli (2(55 m^) 

 of crystals of turnip yellow mosaic nucleo- 

 protein (dark) and the associated protein 

 (light). The two substances were crystallized 

 separately before they were mixed (contact 

 print enlarged about ■: 200). 



Fig. 15. Sedimentation 

 diagram of the turnip 

 yellow mosaic virus show- 

 ing the two comj:onents 

 (5 mg./ml., 24,000 r.p.m.) 



