773 



Razoumofskya Douglasii laricis as a 



parasite, 304 

 Recrudescence, 338 



Red clover, figure of tubercle section, 389 

 Red gum, 545 

 Red-rot of pine, 539 

 Red spider, 296 

 Reduction in size, 342 

 Regeneration, 355 

 Reindeer lichen on ground, 83 

 Rennin, 59 



Replacement, 342, 347 

 Reproduction in bacteria, 24 

 Resin in fungi, 56 

 Resinosis, 343, 350 

 Resin wash, 521 

 Resistance to disease, 325 

 Restitution, 355, 356, 357; meaning of 



word, 355; process of, 355 

 Reticularia lycoperdon withajthalium,i7 

 Reticularia, spores of, 16 

 Retting of fibers, li:^ 

 Reynolds, Ernest Shaw, mentioned, 271 

 Rhabdochromatium, 39 

 Rhizinaceae, 171 



Rhizobium leguminosarum, 29, 36 

 Rhizocallesy, 338 

 Rhizoctonia solani, 269 

 Rhizomorph, figure of, 47 

 Rhizomorpha subterranea, figure of, 47 

 Rhizopus nigricans, chitin in, 52; 



conjugation of, 94; figure of, 100; 



occurrence of, 82; structure of, 99 

 R.hodobacteriaceae, 38 

 Rhodomyces Kochii, 61 

 Rhytisma acerinum, 523; on maple, 165 

 Ribes aureum, figure of hypertrophied 



bark, 367 

 Ringing of trees, 295 

 Roentgen rays and fungi, 62 

 Rcestelia, 188; aurantiaca, figure of, 



204; on apple, diagram of, 212; on 



apple leaf, figure of, 210; on apple, 



magnified view, 211 

 Rodents and truffles, 68; injury by, 294 

 Root asphyxiation, 565; parasites, 299 



Root-rot of oak, 530; of tobacco, 550; 

 figure of, 551 



Roquefort cheese, 704, 705 



Rose chafer, figure of, 275 



Rosellinia quercina on oak seedlings, 163 



Rosettes, 342 



Rostafinski mentioned, 7 



Rotation of crops to prevent disease, 317 



Rottenness, 352 



Rotten wood, 307 



Rotting, 343, 352; of brush, 75 



Rozites gongylophora and the tugging- 

 ant, 365; as food for tropic ants, 71 



Ruppia rostellata, 11 



Russula, 48; description of genus, 742; 

 emetica, 742; in forest litter, 83; 

 nigricans parasitized by Nyctalis 

 asterophora, figure of, 43, with tyro- 

 sinase; ochrophylla, description of, 

 743; roseipes, description of, 743; 

 rubra, description of, 743; virescens, 

 color of, 53; description of, 743; in 

 forest litter, 83 



Rust fungi, 187; occurrence of, 86; 

 lesion on apple leaf, section of, 213; 

 life cycles, forms of, 189; of alfalfa, 

 477; of asparagus, 191, 483, 484; 

 of beet, 485; of clover, 502; of coffee, 

 503; of cotton, 508; of hollyhocks, 

 203, 517; of oat, 531 



Rust, spore relations, diagram of, 190 



Rusts, bibliography of, 214, 215, 216; 

 cytology of, 191; life cycle, 195 



Rye, 546 



Saccharomyces anomalus, 40; aquifolii, 

 140; cartilaginosus in Kefir, 104; 

 cerevisise, 52; description of, 138; 

 figure of, 135; ellipsoideus, descrip- 

 tion of, 139, 140; figure of, 139; of 

 nuclei and division, 136; exiguus, 

 140; fragilis in Kefir, 140; ilicis, 140; 

 Ludwigii, 141; octosporus with mal- 

 tase, 58; Pastorianus I, 140; pyri- 

 formis, 150; Vordemanni, 140 



