INDEX 



<isr> 



Solanaceae, brown rot of, geographical 



distribution, 182 

 histology, figures illustrating, 

 193, 194, 196, 197, 198, 199. 

 200 



history, 177 



host plants numerous, 177 

 inoculation by needle pricks, 188 

 literature, 200 

 method of isolating pathogen, 



188 

 plants and cultures for artificial 



inoculation, 189 

 type of disease, 177 



Sorghum, leaf-stripe of, (See also Bac- 

 terium andropogoni.) 

 South Africa, bacterial diseases found 



in, 5-i 

 South America, bacterial diseases found 



in. 54 



Soy bean, leaf spot of, 474 

 Spain, bacterial diseases in, 66 

 Specimens, care of, 1 19 

 Spieckermann's disease of potato, 64, 



207, 474 



Spraying for control of disease, 74 

 Staining, 



bacteria, 116, 118 

 flagella, 118 

 jars for, 84 

 methods, 116 

 Stains, 



Carbol fuchsin, 117 

 Flemming's triple, 117 

 Gram's, 117 

 Griibler's, 84 

 methylviolet, 117 

 nigrosin, 117 

 special, 119 

 Starch, 



removal by the plant from vicinity 



of the diseased tissues, 50, 233 

 storage of, in diseased tissues, 50, 541, 



547, 563 



Stasis of circulation and tumors, 541 

 Statesman and philosopher versus man 



of science, 636 

 Steamers, used in sterilizing culture 



media, 78 

 Steam-drag, 74 



Steam-heated soil, 73, 114 

 Stereotyped thinking, 636 

 Sterile cooperations, 657 

 Sterilization 

 by fire, 107 

 by germicides, 107 

 of leaf surfaces, 351 

 importance of still air, 108 

 importance of clean hands, 108 

 Stewart's disease, 160. (See also 



Aplanobacter stewarti.) 

 appearance of, on sweet corn, 160 

 cause, 161 



cultural characteristics of patho- 

 gen, 161 

 dwarfing, 170 

 etiology of, 161 



field corn also attacked by, 160 

 figures illustrating, 160, 162, 163, 



164, 170, 171, 174 

 first signs, 170 

 j geographical distribution, 161 



histology, figures illustrating, 165, 



166, 167, 168, 169, 174, 175 

 host plants, 167 

 how disseminated, 176 

 inoculation experiments, 165 

 literature, 176 

 means of prevention, 176 

 morphology of pathogen, 161 

 seed-borne, 161 

 type of disease, 160 

 white male inflorescence, 162 

 yellow ooze from cut stems, 163 

 yellow pockets in tissues, 164, 171 

 Still air, importance of, in making iso- 

 lations, 108 



Stomata, infection through, 16. (See 

 also Injection through natural 

 openings.) 



test for condition of, 553 

 wide open over intumescences, 



543, 548 

 Streptococcus viridans Schottiniiller, 



570 



Stripe-disease of broom corn and sorg- 

 hum, 473 



Style, how acquired, 644, 645 

 Subjects, suitable for special study, 474, 

 475, 476, 477 



