506 



SUBJECT INDEX 



Biochemistry, glycerol, 77-78 



implications, 88-89 



kojic acid, 78 



lactic acid, 76-77 



malic acid, 76 



mannitol, 79 



organic acids, 70-79 



other metabolic products, 86-88 



oxalic acid, 70—71 



pigments, 83-86 



polysaccharides, 79 



sterols and vitamins, 81-82 



succinic acid, 76 

 Biological control of insects, 442, 



448-450 

 "Bios," 24, 25, 288, 289 

 Biotic factors in geographic distri- 

 bution, 396 

 Biotin, 25, 26, 28, 288, 289 

 Birds, 176 



Bitter-rot of apple, 239 

 Black root-rot of tobacco, 105, 109, 



161, 246 

 Black-shank of tobacco, 178 

 Black spot of roses, 248 

 Blackberry, 250, 253 

 "Black-feliow's bread," 352 

 Blakeslea trispora, 166, 401 

 Blastocladiales, 444 

 Blast ocladiella variabilis, 26, 27, 34 

 Blastomyces dennatitidis, 369 

 Blastomycosis, 366, 368, 369 

 B let ill a/ 312 



hyacintbia, 310 

 Blissus leucopterus, 445, 449 

 Blister rust, 285, 420 

 Blodgettia confervoides, 470 

 Blue grass, 258 

 Blue stain, 162, 174, 372, 443 

 Bodinia, 384 

 Boletaceae, 409 

 Boletes, 86 

 Boletol, 86 

 Boletus, 341, 349 



bad ins, 303 



cbrysemeron, 302 



cyanescens, 302 



edulis, 82, 352 



elegans, 303 



felleus, 201 



fiavidus, 312 



gramdatus, 303 



lurid its, 86, 348, 351 



Boletus 



luteus, 302, 303 



viineato-olivaceus , 343, 348 



sat anus, 86, 343, 348, 351 



scaber, 302, 352 



strobilaceus, 86 



variegatus, 303 



viscidus, 312 

 Bordeaux mixture, 243, 401, 420, 449 

 Boron, 10 

 Bostrychus, 485 

 Botrychium, 299 



Botryosphaeria ribis, 264, 265, 278 

 Botrytis, 15, 48, 106, 143, 182, 216, 

 243, 268, 291, 431, 437 



anthopila, 443 



bassiana, 445 



cinerea, 4, 18, 25, 29, 45, 48, 104, 

 128, 149, 151, 155, 226, 227, 

 229, 231, 235, 237, 238, 240, 

 242-244, 247, 254-256, 264, 265, 

 270, 273, 275, 281, 283 



sporoidewn, 435 



vulgaris, 224, 242 

 Brachysporhnn trifolii, 264, 273 

 Brassica, 241 

 Brevilegnia diclina, 431 

 "Bridging host," 262, 263 

 Bromatia, 452, 453 

 Brome grasses, 262 

 Brovnis, 335 



conmiutatus, 262 



hordeaceus, 262 



racemosus, 262 

 Brown rot, of peaches, 115, 173, 246 



of stone fruits, 443 

 Brown spot of pines, 179 

 Brown rot of woods, 44 

 Bryophyta, 299 

 Bryopsis pluvwsa, 461, 462 

 Bryozonns, 137 

 Buckwheat, 224, 242 

 Budding, 211, 212 

 Bucrs, 443 



Burmanniaceae, 298 

 Butterflies, cabbage, 444 

 Butyric acid, 49, 55, 283 

 Buxbaumia, 299 

 Byssocblainys fulva, 94 



Cabbage, 242, 398 

 blackleg, 173, 410, 443 

 club root, 160, 161 



