INDEX. 



305 



Sugar-cane, Polvillo continued. 



Bacillus sacchari Spegazzini continued. 



isolation of 86 



later name than B. sacchari Janse 86 



morphology of 87 



relation to Bact. vascularum 88 



some resemblance to B. sorghi 87 



spores of 87 



bacteria in diseased tissues 86 



bacteria in gum 86, 87 



bacteria, isolation of 86 



bacterial origin of disease 86 



Cobb's disease of sugar-cane.'points of resemblance 



to 85,88 



Diptera, possible carriers 86 



earwigs, possible carriers 86 



eel-worms, possible carriers 86 



etiology 85, 86 



fungi, isolation 86 



fungus, in diseased tissues 86 



fungus in gum 86 



general effect of disease 86 



gum. 



85 



gum, bacteria in 86, 87 



gum. inoculations 87 



Hemiptera, possible carriers 86 



infections, artificial 87 



inoculation experiments 87 



leaves, effect on 85 



Lepidoptera, possible carriers 86 



literature 88 



losses 85 



Melanospora globosa, isolated from 86 



microscopic appearance 86 



mites, possible carriers 86 



plant-cane, susceptibility 85, 88 



propagation of disease 85 



ratoon-cane, resistance of S5, 88 



recovery from disease 86 



red pigment 87 



red stain 85,88 



resistant varieties 86 



sand-fleas, possible carriers 86 



signs of disease 85, 88 



soil conditions, effect 85 



spread of disease 86, 87 



sprouting 85 



striping 85 



susceptible varieties 86 



terminal bud, effect on 85, 86, 88 



transmission of disease 86, 87 



weather conditions, effect 85 



Sugar-cane, reddening of bundles 16, 17, 18 



(See Sugar-cane, Cobb's disease.) 



Sugar=cane, Sereh disease of 3, 52, 73 



aerial roots 73 



atavism 75 



Bacillus sacchari Janse 74, 75, 76 



(See also B. sacchari.) 



bacteria on the surface of diseased cane So 



bacterial origin suggested 75 



Benecke's observations 72, 73 



blossoming, premature 19, 7.3 



"bouquet" Sereh 74 



causes suggested 7.5 



cavities containing bacterial slime 79 



cellulose, degeneration of 74 



chlorophyll, effect on 73 



Cobb's disease of sugar-cane, relation to 52 



copper sulphate, effect of 79 



cuttings, 



decay of 73 



diseased, sound cane from 79 



from mountain cane 76 



time of appearance of disease in 73 



transmission through 73 



Pagb. 

 Sugar-cane, Sereh disease of continued. 



death of foliage 73 



dwarfing 73. 75 



Engelberts' observations 72 



etiolation 73 



etiology 72 



fertilizers, unsuitable, effect 75 



foliage, death of 73 



geographical distribution 52, 72, 78 



growth, effect on disease when rapid 74 



gum, 



bacteria-like particles in 74 



color of 74 



consistency of 74 



origin of 78 



solution in potash 74 



gummed bundles, isolations from 76 



gumming, conditions unfavorable to 74 



gumming of bundles 73, 74, 75 



Heterodera sp 75, 77 



Heterodera radicicola 75 



history 72 



Hypocrea sacchari 75 



immunity 78 



internodes, shortening of 73 



isolations from gummed bundles 76 



isolations from parenchyma 74 



Janse's observations 52, 74, 75 



Java, home of Sereh 72 



Kobus' observations, geographical distribution . 76, 78 



Kriiger's observations 52, 73, 75 



leaves, 



conspicuous crowding of 73 



dwarfing of 73 



dying irregularly 73 



etiolation 73 



persistence 73 



striping 73 



literature 79 



losses 72 



moisture, effect on disease 74, 75 



mountain cane, used for cuttings 76 



nematodes 75 



nucleated cells in phloem 74 



odor accompanying decay of cuttings 73 



oily or resinous drops in parenchyma 74 



origin of term 72 



parasites given as cause 75 



parasitic nature of 77 



parenchyma, 



granular substance in 74 



gumming of 74 



isolation of Bacillus sacchari from 74 



oily or resinous drops in 74 



shining, colorless, yellowish or red drops in ... . 74 



staining of walls 74 



yellow and brown spots 74 



persistence of leaves 73 



pigment, red 17, 73, 74 



solubility of 74 



planting, unsuitable methods, effect 75 



planting of affected stock 75 



Pokkah-bong, resemblance to 82 



portion of plant most diseased 73 



premature blooming 73 



preventive measures 72, 76 



primary Sereh 74 



Prinsen-Geerligs, observations 78 



progress of the disease 72 



Pythium 75 



red bundles 73, 74, 75 



origin of 76 



red stain 73, 74 



resistant varieties 76 



roots of diseased plants 77, 78 



root-system, effect on 73 



