BUTLER ANt) HAFIZ 189 



time of planting, causes a good many of the young shoots to 

 wither within the first 3 months. As this early withering 

 has not been very frequently observed in natural attacks, we 

 conclude that infection of the growing cane, through wounds and 

 through the root buds at the nodes, is the more common origin 

 of the disease. 



The control of the disease should evidently be on much the 

 same lines as in ture red rot*. As, however, wound infection 

 is far more common, the importance of removing diseased clumps 

 before they have time to rot and set free spores is much greater. 

 As a rule the disease is not a severe one and though our 

 experience with it is limited as yet, it is probable that it is 

 incapable of doing permanent damage so long as the measures 

 advocated airainst red rot, which we consider to be essential 

 to the successful growing of thick cane in Northern India, 

 are carried out. 



Description of Plate II. 

 {Cephalos2)orium Sacchari ButJ.) 



Fig. 1. Leaf of sugarcane inoculated with Cephalosporin m JSacchan, showing 

 fungus in the motor cells and emerging to the surface, x 610. 

 ,, '2 . Hypha- in parenchyma of stem and passing from cell to cell through the 

 pits in the walls. x 1!)0. 

 Hyphic in fibro- vascular bundles, x 11)0. 

 Hypha in a cell of the parenchyma with indications of spore formation, 



X 320. 

 8pore formation on hypha* in a vessel of the stem. x .'!20. 

 Mycelium bearing conidia, from a pure culture on nutrient agar. At a the 

 commencement of the formation of a coremial strand is seen. x o20. 

 ,, 7. Conidiophores from a pure culture, after treatment with acetic acid. At <' 



the adherence of the conidia at their bases is indicated, x 610. 

 ,, 8. Successive stages in conidial formation, drawn from a continuous observa- 

 tion. X 640. 

 „ 9. Conidiophore immediately after a spore has fallen and before a new one has 



commenced to appear, showing the hollowed ape.x. x 640. 

 ., 10. Conidia from nutrient agar culture, 6 days old. x (MO. 



♦ Butler, E. J., A; A. Ilaliz Khan, lot; cit. 



