INDEX 



673 



Black rot of potato, 253. (See also 



Bacillus phytophthorus.) 

 appearance, 255 

 base of stem specially subject to, 



254, 255 

 black stain conspicuous in, 254, 



260 



cause of, 257 

 contrasted with Bacterium so- 



lanacearum, 257 

 control of, 278 



figures illustrating, 253, 254, 255, 

 256, 258, 259, 260, 261, 262 

 264, 275 



geographical distribution, 257 

 histology, figures illustrating, 



263, 266 

 host plants, 257 

 inoculation experiments, 267 

 leaf-curl in, 263 

 lenticel infection, 265 

 literature, 278 

 method of isolation, 263 

 non-starch consuming, 264, 266 

 non-vascular disease, 253, 255 

 resemblance to other potato dis- 

 eases, 265 



resistant varieties, 277 

 stomatal infections doubtful, 



277 



temperature relations, 274, 278 

 transmission, 278 

 type of disease, 253 

 varieties subject to, 277 

 virulence long persistent in or- 

 ganism causing, 263 

 weather relations, 257 

 Blood serum, use as culture medium, 



105 



Blossom-blight, 16, 359-361 

 Blue prints, bleaching of, 128 

 Boll-rot of cotton, 314. (See Bac- 

 terium malvacearum.) 

 Bordeaux mixture, 74, 114 

 Braun (Harry), method of control of 



seed-borne organisms, 71, 72 

 Brevity, advantage of, in scientific 



papers, 647 



when not desirable, 647 

 Bromide prints, bleaching baths for, 128 

 43 



Brooks (Win. K.), citation from, 646 

 Broom corn, leaf-stripe of. (See Bac- 

 terium andropogoni), 473 

 Brown rot of Solanaceae, 177. (See also 



Bacterium solanacearum.) 

 distribution of, 182 

 figures illustrating, 177, 178. 179, 

 180, 181, 182, 184, 185, 186, 

 187, 189, 276 

 histology, figures illustrating, 



193, 194, 196, 199, 200 

 in East Indies, 54 

 in United States, 55 

 widespread on many hosts, 177 

 Brusone, rice disease common in Italy, 



66 

 Bryophyllum, what sets leaf -buds 



growing, 619 



Bud-rot of coconut, 9, 52, 54, 474 

 Buds, on tomato leaves, 50 



on crown galls, 419, 437, 439, 442, 



452, 456, 



Burrill (T. J.), discovers cause of pear 

 blight, 1 



CABBAGE, black rot of, 145. (See 

 Black rot of cruciferous 

 plants.) 

 in Holland, Denmark and United 



States, 62 



tumors due to freezing, 485 

 tumors due to sand-blast, 489 

 Cabbage pith, woody cylinder in, 485 

 Cabbage spot disease, 300. (See cauli- 

 flower spot.) 

 Calla lily rot, resemblance to soft rot of 



carrot, 229, 230 

 Cameras, for general purposes, 90, 92, 



93 



Crandall model, 91 

 for use in making photomicrographs, 



94 



Canada, bacterial diseases found in, 54 

 Cancer 



*in plants, 413. (See Crown gall.) 

 literature cited, 573 

 of rats, 571 



parasite (?) suspected cause of, 570 

 plant tumors suggestive of, 51, 417, 

 419, 421, 471, 558, 569 



