RUBBER (HEVEA) DISEASES 125 
Steixmaxx. A. — Continued. 
1923. Aanvullende mededeoling over het optreden van Ustulina bij Hevea brasili- 
ensis in Java. In Arch. Rubbercult. Nederland.-Indie, jaarg. 7, p. 448- 
452, illus. Bibliography, p. 4.">l'. (Mededeelingen van het Rubberproef- 
statioii •" West-Java "-Phytopathologische serie no. 1, pt. 3.) 
English summary : Some observations on the occurrence of Ustulina 
on rubber trees in Java, p.*"463— 465. Confirms Perch's conclusions 
as to the identity of U. zonata with U. vulgaris. 
1923. Over eene ziekte van op de kweekbedden staande Hevea-zaailingen. In 
Arch. Rubbercult. Nederland.-Indie, jaarg. 7, p. 444—445, illus. (Mede- 
deelingen van het Rubberproefstation " West-Java." Phytopathologische 
serie no. 1, pt. 1.) 
English summary : On the occurrence of a nonparasitic disease of 
Hevea seedlings on nurseries, p. 461. The disease, which was at first 
wrongly attributed to Pestalozzia palmarum, is due to sunburn. 
1923. Over de regenerate van tegen bruinen binnenbast geschilden Heveabast. In 
Arch. Rubbercult. Nederland.-Indie, jaarg. 7, p. 153—167. illus. Bibliog- 
raphy, p. 164—165. (Mededeelingen van het Riubberproefstation " W >st- 
Java "). 
English summary: On the renewal of Hevea bark after peeling, p. 
166-167. 
1924. Enkele mededpelingen over twee in Java tot nu toe minder bekende wortel- 
schimmels bij Hevea brasiliensis. (Phytopathologische ser. no. II, 3. t 
In Arch. Rubbercult. Nederland.-Indie, jaarg. 8, p. 138-140, illus. English 
summary, p. 143-144. 
Eleports cases of blackroot disease (Rosellinia) and Sphaerostilbc 
repens. 
1924. Korte aanteekeningen omtrent Ustulina. (Phytopathologische ser. no. II, 4.) 
In Arch. Rubbercult. Nederland.-Indie, jaarg. 8, p. 140. English sum- 
mary, p. 144. 
" In connection with our previous paper where we pointed out the 
identity of the Ustulina zonata (Lev.) Sacc. from Java with the 
Ustulina vulgaris Tul. ... we have made a more detailed study 
of this matter . . . By reason of priority we came to the con- 
clusion that the species in question ought to be called Ustulina maxima 
(Weber) v. Wettstein." 
1924. Over een heksenbezem bij Hevea brasiliensis. (Phytopathologische serie no. 
II, 1.) In Arch. Rubbercult. Nederland.-Indie, jaarg. 8, p. 130-134. 
Bibliography, p. 133-134. English summary, p. 141. 
" The cause of this abnormal development may be attributed to the 
stimulus of an intracellular fungus, the mycelium of which is found 
principally in the tissues of the pith. As the fructifications have up 
to now not been found, we are unable as yet to identify the fungus." 
1925. De ziekten en plagen van Hevea brasiliensis in Nederlandsch-Indie. 146 p., 
illus. Buitenzorg. 
and Bernard, C. 
1925. De luizenschimmel van Hevea, Hypocrella Reineckiana P. Henn. In Arch. 
Rubbercult. Nederland.-Indie, jaarg. 9, p. 515-517, illus. English, p. 525. 
On leaves and stalks. Dutch East Indies. Does not injure the tree, 
but contributes to destroying noxious insects. 
Stevexs, F. L. 
1913. The fungi which cause plant disease. 754 p., illus. New York. 
Various fungi listed on Hevea. 
and Hall, J. G. 
1921. Diseases of economic plants. 507 p., illus. New York. 
Diseases of rubber mentioned are " Cankers due to various species 
of Nectria. Corticium, Fusicladium, and Diplodia ; die-back (Thyridaria) 
which kills the young shoots ; seedling diseases due to Pestalozzia, 
Helminthosporium, and numerous leaf fungi, and root-rot due to 
Fomes, Irpex, Hymenochaete, and Poria." 
Stevexs, II. P. 
1921. The effect of mould on the properties of sheet rubber. (Report by the con- 
sulting chemist in London.) In Bui. Rubber Growers' Assoc, v. 3, p. 
190-191. 
1921. Mould on sheet rubber. (Report of the consulting chemist in London.) In 
Bui. Rubber Growers' Assoc, v. 3, p. 243-245. 
1921. Mouldy sheet and the effect of mould on quality. (Report by the con- 
sulting chemist in London.) In Bui. Rubber Growers' Assoc, v. 3, 
p. 97-98. 
1921. The treatment of mouldy sheets and its effects on the vulcanizing prop- 
erties. (Report of the consulting chemist in London.) In Bui. Rubber 
Growers' Assoc, v. 3, p. 472—473. 
1922. Keeping qualities of rubber prepared with sodium silicofluoride. In Bui. 
Rubber Growers' Assoc, v. 4, p. 591—592. 
Rubber prepared with sodium silicofluoride is satisfactory under 
aging tests. 
1922. Modified application of podium silicofluoride. In Bui. Rubber Growers' Assoc. 
v. 4, p. 592-593. 
Experiments in the use of sodium silicofluoride as a mold preventive. 
1922. Mould prevention. In Bui. Rubber Growers' Assoc, v. 4. p. 132—133. 
Sodium silicofluoride recommended as an inexpensive and effective 
preservative. 
1922. Sodium silicofluoride as a mould preventive. In Bui. Rubber Growers' Assoc. 
v. 4, p. 227-228. 
