No. 3, July, 1921] PATHOLOGY 307 



arrive at fundamental principles upon which selection of disease-resistant sorts maybe based. 

 All new introductions should be tested in localities where particular diseases are prevalent. — 

 A. 7\ Wiancko. 



DESCRIPTIVE PLANT PATHOLOGY 



2105. Anonymous. The menace of the white pine blister rust. Amer. Forestry 27: 6. 

 1921. 



2106. BiJL, P. A. VAN DER. Notes on some sugar cane matters. Jour. Dept. Agric. Union 

 of South Africa 2:122-128. Fig. 1-5. 1921. — Notes are given on the root disease caused by //i- 

 nianiia stellif era, leaf diseases (due to Leptosphaeria sacchari and Helminthosporiumsacchari), 

 and the stalk diseases caused by Melanconium sacchari and Cephalosporium sacchari. Refer- 

 ence is also made to the non-setting of seed in Uba and other cane varieties in South Africa. — 

 E. M. Doidge. 



2107. BoTTOMLEY, A. M., AND K. A. Carlson. Parasitic attack on Eucalyptus globulus. 

 A note on Stereum hirsutum in plantations in the Transvaal. Jour. Dept. Agric. Union of 

 South Africa 1 : 852-858. PI. 1-2. 1920. — A parasitic attack of Stereum hirsutum on Eucalyp- 

 tus globulus in gum plantations on the farm Cliffendale near Roodepoort is described. The 

 disease is confined to stem tissues where it produces a characteristic soft dry rot which renders 

 the timber useless for industrial purposes. An examination of the above and other plantations 

 showed that the fungus was common as a saprophyte on old stumps and that Cliffendale was 

 the only locality where it had become parasitic; and further that E. globulus was the only 

 species of gum susceptible to the disease. The attack in this case was thought to be due prob- 

 ably to lack of vigor in the trees occasioned by unsuitable local conditions of soil or climate 

 or both. Control measures advocated consist in growing only those species found to be most 

 suitable to the area in question and in the destruction of all infected stumps by means of 

 the saltpeter and kerosene oil method. — A. M. Bottomley. 



2108. Brooks, F. T., and M. A. Bailey. Silver leaf disease (including observations 

 upon the injection of trees with antiseptics). Jour. Pomology 1: 81-103. 1920. — Reprinted 

 with abridgments from Jour. Agric. Sci. 9: 1S9-215. 1919. — L. H. MacDaniels. 



2109. Cheel, Edwin, and J. B. Cleland. Disease in forest trees caused by the larger 

 fungi. Forest. Commission New South Wales Bull. 12. 12 p., pi. 1-20. 1918.— The author 

 emphasizes the importance of the study of fungi causing decay of living trees, stored lumber, 

 and building timbers, giving non-technical descriptions of various members of the genera 

 Armillaria, Pholiota, Polyporus, Polystictus, Fomes, Hexagona, and Trameies which have 

 been found or may be found causing decay of important woods. The plates illustrate the rots 

 produced by, or the sporophores of, the following forms: Armillaria mellea, Pholiota adiposa, 

 Polyporus eucalyptorum, P. ochroleucus, P. gilvus, P. dryadeus, P. salignus, Polystictus 

 versicolor, Fames robustus, F. applanatus var. australis, and Trametes lactinea. — Reginald 

 H. Colley. 



2110. Doidge, E. M. A tomato canker. Jour. Dept. Agric. Union of South Africa 1: 

 718-721. 1 fig. 1920. — A popular account of a bacterial disease of tomatoes caused by Bac- 

 terium vesicatorium. — E, M. Doidge. 



2111. Dufrenoy, Jean. Witches'-brooms of Pinus maritima. Phytopathology 11: 

 27. 1921. — Examination of hypertrophied tissues from witches'-brooms occurring on Pinus 

 maritima in southwestern France showed the cambial cells generally infested by bacteria, 

 which, when inoculated into young buds of P. maritima, killed the buds but failed to produce 

 witches'-brooms. — B. B. Higgins. 



2112. Fryer, P. J. Insect pest and fungus diseases of fruit and hops, xv -f- 728 p., 24 

 colored pi., 305 fig. Cambridge University Press: London, 1920. — The author has prepared 



