RUBBER (HEVEA) DISEASES 109 
Harm sen, J. R. 
1918. Eenige beschouwingen over bruine binnenbastziekte en uitkomsten van de 
gevolgde teermethode ter bestrijding van deze ziekte. In Nederland.-Ind. 
Rubbertijdscbr., jaarg. 3 (2de halfjaar), p. 157-160, illus. 
" Voordracht, gehouden in de Rubberplanters vergadering van den 
29 en November, 1918." Reprinted in jaarg. 4, p. 69-74, 1919. 
1919. Brnine binnenbast. Verdere belangrijke mededeelingen. In Publ. Nederland.- 
Ind. Landb. Synd., jaarg. 11, p. 366-385. 
1920. Bruine-binnenbastziekte. In Arch. Rubbercult. Nederland. -Indie, jaarg. 4, 
Alg. Gedeelte, p. A214-A221. 
Lecture delivered at the meeting of the Rubberplanters-vereeniging 
te Bandoeng, Feb. 25, 1920. 
1921. The thinning out of rubber according to yield-records and the occurrence 
of brown bast. In Trop. Agr., v. 57, p. 75-81. 
Lecture given at a meeting of the Rubber planters' association of 
Java, Bandoeng, Feb. 23, 1921. Tr. from the Dutch by A. C. Tutein- 
Nolthenius. 
Harrison, J. B. 
1922. Report of the Department of Science and Agriculture for the year ended 
31st of Dec, 1920. In Brit. Guiana Rpt. Dept. Sci. and Agr., 1920, p. 1-35. 
Conditions affecting the development and spread of the South 
American leaf disease, 
and Stockdale. F. A. 
1911. Rubber and balata in British Guiana. 46 p., illus. Georgetown, Brit. Guiana. 
Hartjens, J. C. 
1920. Vlekken op sheets in verband met het gebruik van sulfiet en bisulfiet. In 
Arch. Rubbercult. Nederland.-Indie, jaarg. 4, p. 137-J61, illus. (Meded. 
Proefstat. Malang 31.) English summary: Spots on sheets in connection 
with the use of sulphite and bisulphite, p. 159-161. Abstract in Planters' 
Chron., v. 15, p. 369-370, 1920; and in Trop. Agr., v. 55, p. 6-7, 1920. 
IIellendoorn,, H. J. 
1919. Over het ontstaan van rustiness bij sheetrubber. In Arch. Rubbercult. Neder- 
land.-Indie, jaarg. 3, p. 419—436. (Meded. Centraal Rubberstat.) English 
summary : On the cause of rustiness in sheet rubber, p. 431—436. 
Experiments show that rustiness is caused by aerobic microorganisms. 
The microorganism has not been isolated. 
Hennings, P. 
1900. Fungi paraensis. I. In Hedwigia Beibiatt, Bd. 39, p. (78)-(80). Original 
description of Phyllachora huberi, p. (78). 
Suggests that since no parasitic fungus had heretofore been found 
on Hevea, an important host, with greater distribution it should be 
considered serious. 
1901. Fungi paraensis. (I). In Bol. Mus. Para, tome 3, p. 231-237. 
Description of Phyllachora huberi on Hevea brasiliensis. 
1904. fiber die auf Hevea-arten bisher beobachteten parasitischen Pilze. In Notizbl. 
K. Bot. Gartens u. Mus. Berlin, Bd. 4, p. 133-138, illus. 
New species : Aposphaeria ulei, Dothidella ulei, based on the collec- 
tions of E. Ule in 1901/02 and on the work of Zimmerman published 
in 1901. 
1904-05. Fungi amazonici a cl. Ernesto Ule collecti. I-IV. In Hedwigia, Bd. 43, 
p. 154-186, 242-273, 351-399; Bd. 44, p. 57-71, illus. 
New species : Aposphaeria ulei, Dothidella ulei, Ophiobolus heveae. 
Heurn, F. C. van, and Hbusser, K. 
1920. Vlekken op sheets. In Arch. Rubbercult. Nederland -Indie, jaarg. 4, Alg. 
Gedeelte, p. A137-A139. 
Holland, T. H., and Deutrom, H. A. 
1924. [Report on diseases of rubber.] In Dept. Agr. Ceylon Bui. 70, p. 46. 
Fomes Ugnosus gives most serious'troubie ; brown bast a negligible 
quantity, other diseases causing little trouble. 
Hops, R. J. H. 
1919. Diseases of rubber plantations. In Trop. Agr., v. 52, p. 339-342. 
Recommends Brunolinum Plantarium as a fungicide. Reprinted from 
Malayan Tin and Rubber Journal, v. 8, no. 7. 
Hobne, A. S. 
1921. Phloem necrosis (brown-bast disease) in Hevea brasiliensis. In Ann. Bot., 
v. 35. p. 457-459. Also in Bui. Rubber Growers' Assoc, v. 3, p. 271- 
272, 1921. 
Material studied was from British North Borneo. Showed sieve-tube 
degeneration in the tissues affected. 
1925. Further observations on phloem necrosis (brown-bast disease) in Hevea 
brasiliensis. In Rpt. Proc Imp. Bot. ( on!'. London, 1924, p. 170-175. 
"The discovery of sieve-tube necrosis in Hevea brasiliensis places the 
brown-bast disease in the category of obscure diseases in which the 
occurrence of phloem necrosis is a prominent feature, and the use of 
the expression does not necessarily imply the agency of a casual 
organism." 
Reprinted in Trop. Agr., v. 64, p. 328-333. 1925. 
HOUTH DE LANCE, W. G. TEN, JR. 
1916. Bastvorming bij Hevea brasiliensis in verband met licbt. Lumpvorming van 
latex in verband met licbt. In Publ. Nederland.-Ind. Landb. Synd.. 
jaarg. 8, p. 379-382. 
