THE TRANSLOCATION OF PROTOPLASM 



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might almost believe that one has before one a foreign organism 

 which is living as a parasite in the Chaetomium hyphae." Intra- 

 hyphal hyphae have also been recorded as present in old cultures : 

 of Ascophanus carneus, by Ternetz * (1900) ; and of Ascobolus 



Fig. (39. — Pyronema confluens. Diagrams illustrating the 

 outgrowth of a hypha from a living cell into a dead cell. 

 Parts of two cells are shown in median longitudinal 

 section. The lower cell was killed by a mechanical 

 operation with a needle, with the result that, imme- 

 diately, the septum became convexly bulged into the 

 dead cell and its pore closed by a plug, as shown in 

 Fig. 68. Half an hour later, as shown here on the left, 

 a hypha began to grow from the living cell into the dead 

 cell as an extension of the septal wall. A few minutes 

 later, it had attained the length shown in the drawing 

 on the right. During its growth, it pushed aside the 

 plug which formerly closed the pore of the septum. 

 Magnification, 3240. 



magnificus, by Dodge. At first (1912), Dodge 2 thought that the 

 intrahyphal hyphae of A. magnificus were those of a parasite 

 but, in a subsequent communication (1920), he 3 corrected this 



1 C. Ternetz, loc. cit., p. 280, Taf. VII, Fig. 5. Ternetz gives many references to 

 the literature concerned with intrahyphal hyphae. 



2 B. O. Dodge, " Artificial Cultures of Ascobolus and Aleuria," Mycologia, Vol. IV, 

 1012, pp. 220-221, Plate LXXII, Figs. 7 and 8. 



3 B. O. Dodge, " The Life History of Ascobolus magnificus,'''' Mycoloqia, Vol. XII, 

 1920, pp. 125-126, Plate VIII, Figs. 1-7. 



