INDEX. 



p _ 



Rot, heart, white, ages of trees liable to infect ion 



ash, cause, description, and prevention n, 17 



cause and nature, characteristic signs 25 26 



fungus, distribution 



effect on wood structure ; l : >- 



hoste, susceptibility of different trees 26 27 



• influence of environment, factors favorable to development. 



method of infection and spread 



prevalence, influence of environment :; I 33 



preventive measures 



ultimate fate of diseased trees 



piped, oak and chestnut, description and growth of disease 



sap, birch, caused by Polyporus betulinus, description - 5] ;,-_> 



caused by Daedalea quercina, description g] 



Fomes applanatus, description 



Polystictus pergamenus, description 



versicolor, description 



Cottonwood, cause and description of decay 



fungi causing, description 49 g] 



soft, oaks, cause, description, and growth II |_> 



white, cause, trees affected, and description of fungus Is 49 



caused by Hydnum crinaceus, description 1 1 15 



Polyporus squamosus, description : - 



Rots, root, causes, symptoms, and destruction of trees 22 24 



sap, caused by wound fungi, description 



species of deciduous trees 



Rusts, forest trees, description and control 19-20 



Salix spp. See Willow. 

 Sap-rot. See Rot, sap. 



Saplings, forest trees, susceptibility to sulphur-gas injury 11 



Saprophytes causing diseases of trees 11 25 



Scarlet oak. See Oak, scarlet. 



Schuman, K., and K. Lauterbach, reference to work 



Scrub pine. See Pine, scrub. 



Season checks in timber, entrance of sap-rotting fungi M. 



Shelf fungi, description and injuries to trees 



Slime-flux diseases, description l 



Smelters, injuries to trees from fumes 1 1 > 12 



Smoke, injuries to trees K 



Soil, conditions producing disease ! 



injuries by gas and smoke 12 



Spanish oak. See Oak, Spanish. 



Spartina cynosuroides, occurrence of Fraximus lanceolate 



Sporophores of Daedalea quercina, description I 



Fomes fomentarius, description 



igniarius, formation 



Polyporus betulinus, description 



obtusus, characterist Lcs 



Polystictus pergamenus, description 



versicolor, growth and description 



Spots, leaf, forest trees, caused by fungi 



Stag-headed condition, causes in soil conditions 



149 



