34 



INDEX. 



Page 

 Sugar-cane, Cobb's disease of continued. 



recovery from 27, 30, 46 



red bundles 16, 26, 41, 53 



(See also red stain J 



contents of 45, 52 



fungus reported in 49, 51 



isolation of Bact. vascularum from 17, 46 



red ooze, cause of 46 



red ooze, isolation of Bact. vascularum from 46 



red stain 1 6 



(See also red bundles.) 

 ascribed to symbiotic action of B. pseudarabinus 



and a fungus 49 



cause of 53 



Greig-Smith's investigations of 49 



reduction of sugar-content 3, 7, 10 



remedies for 70 



resistance of acid canes 47 



resistance to disease, cause of 47 



resistant varieties 47, 69 



result of check punctures 28, 32 



resuscitation of Bact. vascularum from old diseased 



canes 46 



rusty spots and streaks on leaves n, 18, 22 



23, 24, 25, 27 



saprophytes following parasite in 21, 23, 26, 31 



secondary infections, effect of slow growth 46 



secondary signs 19, 22, 23, 24, 48 



Sereh, relation of, to Cobb's disease 52 



shoots, pushing of 24 



shortening of internodes 24 



shrivelling of leaves 24 



signs of disease 3, 15 



Boname's observations in Mauritius 10 



Cobb's observations in Australia 5, 6 



Dranert's observations in Brazil 3 



observations in Washington 21 



other observations in Brazil 9 



Tryon's observations in Queensland n 



slime, bacterial 3, 7, 13, 14, 15, 24, 53, 66 



(See also gum and vasculin.) 



chemical reactions of 7, 13, 14 



comparison with the mucins 14 



dissemination in tissues 6, 15, 24, 66 



from cultures, comparison of chemical reactions 



with those of gum from cane 13 



identity with gum 13 



ooze from leaves and stem 16, 22, 25, 53, 66 



sign of the disease 3, 15 



slow growth of cane, effect on susceptibility. . 34, 37, 46 

 Smith, R. Greig, studies on the disease, 

 (See also Bact. vascularum ) 



geographical distribution 3 



gum, nature and origin of 13 



gum-production, dependent on certain carbon- 

 foods 64 



preventive measures 69 



soda, gummed sieves cleaned with 6 



sodium chloride, poisonous effect of 63, 69 



soil-conditions, relation to susceptibility of cane. . 69 



solution of middle lamellae (fig. 6) 16 



spread of disease, conditions favoring 48, 68 



steaming cane for detection of 18, 69 



stomata, bacterial ooze through 16, 53 



striping of leaves 3, 1 1, 15, 18, 22, 23, 24 



sugar, crystallization, effect of disease on 9 



sugar, interference with clarification 3 



sugar-content, reduction of, in gummed cane .7, 10, 



15,62,63 

 sugar-content, relation to susceptibility of cane. . 69 



susceptible varieties 9, 10, 47, 69 



susceptibility, acidity of cane and 47 



slow growth and 37, 46 



soil conditions and 69 



sugar content and 69 



sweating of cane for detection of 69 



Pagb. 

 Sugar-cane, Cobb's disease of continued. 



terminal shoot, distortions of 1 1 , 1 6, 25, 26, 5 2 



tissues attacked 6, 7, 15, 24, 52 



titration of juice of cane varieties 47 



top-rot, points of difference 82 



transmission of disease 48, 68 



treatment 68 



Tryon's studies, 



earliest reports of disease in Queensland 5 



effect of drainage 70 



effect of soil 70 



geographical distribution 3, 1 1 



inoculation experiments n 



pecuniarv losses in Australia 70 



signs of disease n 



susceptible varieties 69 



transmission 68 



varieties resistant to 69, 70 



Common Purple 47 



Lalanjore 10 



Louisiana No. 74 47 



Louzier 10 



varieties susceptible to 69, 70 



Bambou 10 



Cayanna 9 



Common Green 47 



Creoula 9 



Imperial 9 



Mauritius Ribbon 69 



Oteheite 9 



Rappoe 19 



Rose Bamboo 19 



vasculin 7 



(See also gum.) 



characteristics of 7 



production of 7, 8 



reactions to chemicals 7 



vessels, bacterial growth for 5 feet in 53 



yellow bundles 16, 26, 41 



yellow ooze, isolation of Bact. vascularum from . . 46 



yellow slime, variability in appearance of 60 



(See also slime, bacterial.) 



Sugar-cane, gumming 3 



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



Sugar-cane, gummosis 13 



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



Sugar-cane, heart-disease 81 



(See also Sugar-cane, Pokkah-bong; Sugar-cane, top- 

 rot.) 



bacteria, presence of 83 



molds, presence of 83 



Sugar-cane, humid-gangrene 85 



(See also Sugar-cane, Polvillo.) 



Sugar-cane, Pokkah=bong 3, 81 



(See also Sugar-cane, top-rot.) 



aerial roots 82 



bacteria, presence of 83 



economic aspect of 82 



leaves, abnormal development 82 



moulds, presence of 83 



preventive measures 84 



red stripes : 82 



Sereh, resemblance to 82 



signs of disease 82 



sprouting of buds 82 



stem, thinning of 82 



time of appearance 82 



Sugar-cane, Polvillo 3, 85 



acarids, possible carriers 86 



animal parasites in deceased tissues 86 



attack, point of 86 



Bacillus sacchari Spegazzini, 



comparison with B. marcescens 87 



comparisons with Micrococcus prodigiosus Cohn 87 



cultural characters 87 



inoculation experiments 87 



