. Bulletin. Natural history; Natural history. 408 Illinois Natural History Survey Bulletin Vol. 23, Art. 4 that, in general, moisture is under pressure throughout the heartwood of such an affected tree. However, in a few cases he found pressure to be present only in isolat- ed sections of the heartwood. May (1942) showed that bleeding or fluxing from the heartwood of elms affected with wetwood was independent of sap flow in the sap- wood. He considered slime flux to be one of the manifestations of wetwood. Cran- dall (1943), working with winter-injured Platanus acerifolia Willd. in 1934, found
. Bulletin. Natural history; Natural history. 408 Illinois Natural History Survey Bulletin Vol. 23, Art. 4 that, in general, moisture is under pressure throughout the heartwood of such an affected tree. However, in a few cases he found pressure to be present only in isolat- ed sections of the heartwood. May (1942) showed that bleeding or fluxing from the heartwood of elms affected with wetwood was independent of sap flow in the sap- wood. He considered slime flux to be one of the manifestations of wetwood. Cran- dall (1943), working with winter-injured Platanus acerifolia Willd. in 1934, found a bacterial infection to be present in wet- wood-affected trunk wood. He suggested that the frost cracks that were present in the trees affected with wetwood had developed during periods of low tempera- ture. The affected trees fluxed freely through these cracks. Large (1944) described a flux of tung tree as alcoholic flux or white slime flux and stated that the disease was confined to the cambial region. He found bacteria and an Actino- mycete-like fungus associated with this type of flux. Most of the work on slime flux before 1935 was concerned mainly with the visible manifestations of the disease on the outside of trees. Ludwig (1886, 1888, 1890) described alcoholic flux or white slime flux of oak, birch, poplar and maple, and brown slime flux of apple, elm, birch, horse chestnut, poplar and oak. He stated that in brown slime flux the sap or slime formed in the wood and broke through the bark, and both the bark and wood soon decayed. He associated Endoniyces magnusii Ludw. with white slime flux, and Micrococcus dendroporthos Ludw. with brown slime flux. Following Ludwig's early work, slime flux was investigated by Hansen (1889) in Denmark, by Holtz (1901) and Stautz (1931) in Germany, by Massee (1897, 1907) and Ogilvie (1924) in England, and by Stone (1916) and Cook (1918) in the United States. These investigators, with the exception of Ogilvie (1924), be- lieved that slime
Size: 1174px × 2129px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
