RUBBER (HEVEA) DISEASES 117 
PrrcH. T. — Continued. 
1023. Report of the work of the division of botanv and mvcologv. In Ann. Rpt. 
Ceylon Dept. Agr. 1922, p. D17-D18. 
Root diseases of Hevea caused by Xyloria thwaitesM and Fomes 
lucidU8. ••(die case was reported 'in which Polyporus mesotalpae, 
which is known to cause root disease in tea, was associated with a 
Hevea." 
1923. A root disease of Hevea (Xylaria thwaitesii Cooke). In Trop. Ajrr., v. CO, 
p. 100-101, illus. 
1921. Thread Mights. In Ann. Roy. Bot. Card. Peradeniya, v. 9, p. 1-45, illus. 
Malayan thread-Wight on Hevea. p. 27—28. On stems and leaves. 
Malaya, Sumatra. " This species does nut appear to cause damage to 
woody stems, as far as the available specimens show, but it kills the 
haves when it runs over them.*' Fructification unknown. White stem 
blight on Hevea, etc., p. 29-31. Ceylon. 
1923. Additions to Ceylon fungi, III. In Ann. Roy. Bot. Card. Peradeniva, v. 0, 
p. 313-i - 
rina rufochracea v. Hohnel in litt., n. sp., recorded from Maria- 
watte, Ceylon. 
1923. Notes on Cevlon Thelephoracea?, etc. In Ann. Roy. Bot. Gard. Peradeniva, v. 9, 
P. 259-298. 
ium empl<i. strum B. and Br. recorded as common on de id 
branches of Hevea; also Pcniophora decidua, n. sp. 
Peters. L. 
1912. Uber eine Fruchtfiiule von Hevea brasiliensis in Kamerun. In K. Biol. Aast 
Land.-u Forstw. Mitt 12 (Berlcht 1911), p. 18-22. 
Fruit rot caused by a species of Phytophthora. Other fungi and 
bacteria were found. 
Pinching, H. C. 
1921. [Report on visit to Burma.] In Bui. Rubber Grower?' Assoc, v. 3, p. 64-75. 
Pests and diseases, p. 69-74. Several fungi listed. 
1921. A consideration of the present condition of the earliest Hevea plantings in 
the East. In Rpt. Internat. Rubber Conf. Brussels, 1924, p. 166-180. 
Planters' Association of Ceylon*. 
1905-24. Rubber industry. In Tear Book Planters' Assoc. Ceylon. 1904-23. 
Xo reference to pathology of rubber in reports before 1904. Report 
on fungous diseases under various titles : as, notes by Government 
Mycologist, Report of Mycological Division, etc. 
Pratt. H. C. 
1917 Anparent relation between height of tapping cut and black-thread attacks 
(Phytophthora faberi Maub.i. In Trop. Agr., v. 40. p. 7. 
The nearer the tapping cut is to the ground the more liable the 
tapping area is to attack. 
1917. Preventive measures against black thread (Phytophthora faberi). In Agr. 
Bui. Fed. Malav States, v. 5. p. 180-182. Also in Trop. Agr., v. 48, 
p. 304-306. 1917. 
se known as black-thread, stripe canker, or cambium rot. Prog- 
ress of disease dependent upon wet weather and tapping. Daily 
disinfection with carbolineum recommended. Report is from Sumatra. 
Rands, R. D. 
1919. De bruine binnenbastziekte van Hevea brasiliensis ; voorloopige mededeeling. 
In Arch. Rubbercult. Nederland. -Indie, jaarg. 3, p. 156-159. Bibliography, 
p. 159. (Meded. Inst. Plantenziekten.) 
English translation : Brown-bast disease of Hevea brasiliensis; pre- 
liminary account, p. 158-159. " It appears, therefore, that brown bast 
- an accentuated condition of gum secretion probably resulting from 
the response on the part of the tree to the present methods of tapping." 
1919. Progress report on brown bast. In Publ. Nederland. -Ind. Landb. Synd.. jaarg. 
11, p. 385-387. 
1920. Selectie van een zeer productief ras van Hevea. dat een groot weerstands- 
vermogen tegen bruine binnenbast-ziekte vertoont. . . . (With a sum- 
mary in English). Ivleded. Inst. Plantenziekten Buitenzorg 42. 14 p. Also 
in Arch. Rubbercult. Nederland. -Indie, jaarg. 4, Ale:. Gedeelte, p. A264- 
A2T4, 1920. 
English summary has title: Selection of a high-yielding strain of 
Hevea resistant to brown bast. 
1921. Brown bast of plantation rubber: Its cause and prevention. In Arch. Rubber- 
cult. Nederland. -Ir.die. jaarg. 5. p. 223—278, illus. Literature cited, p. 
275—278. (Meded. In--t. Plantenziekten 47. i 
Dutch ivsumt', p. 272-274. Gum secretion indicates disease to be of 
the nature of a wound response. Abstract in Rev. Appl. Mycol., v. 1, 
p. 137-140. 1922. 
1921. Histological studies on the brown-bast disease of plantation rubber. Meded. 
Inst. Plantenziekten Buitenzorg 4'.'. 27 p., illus. Literature cited, p. 20-27. 
Abstract in Rev. Appl. Mycol.. v. 1. p. 140-142. 1022. 
Brown-bast appears to represent an accentuated type of wound gum 
: '•jinn probably resulting from response to overtrequent tapping. 
Affected bark is not killed, but is often more active than normal. 
1924. South American leaf disease of Para rubber. U. S. Dept. Agr. Bui. 12S6, 
IS p., illus. 
