1106 0. Branner und A. Voigt: Technische und Kolonialbotanik 1909. [130 



Reunion 750—950 g Essenz auf 1000 kg Blätter, oder 15000 kg Blätter pro 

 ha mit 30—40 1 Essenz pro Jahr. 



1817. Ridley, H. N. Rubber Cultivation on socalled Peat Soil. 

 (Suppl. to Tropic. Agric. and Magazine, XXX11I [1909], p. 477—478.) 



1818. Ridley, H. N. Rubber cultivation on so called peat soil. 

 (Agric. Bull. Straits and Fed. Malay St., VIII [1909], p. 468—470.) 



1819. Carruthers, J. B. The Treatment of acid Soils for Rubber 

 and other Oulti vations. (Suppl. to Tropic. Agric. and Magazine, XXXII 

 [1909], p. 192.) 



1820. Carruthers, J. B. The treatment of acid soils for Rubber 

 and other cultivation s. (Agric. Bull. Straits and Fed. Malay St., VIII 

 [1909], p. 1—2.) 



1821. The Pruning of Rubber. (Suppl. to Tropic. Agric. and Maga- 

 zine, XXXII [1909], p. 300.) 



1822. Precocity in Rubber Tree. (Suppl. to Tropic. Agric. and 

 Magazine, XXXII [1909], p. 408.) 



1823. Rubber Bearing Age and Future Yields. (Suppl. to Trop. 

 Agric. and Magazine, XXXII [1909], p. 485.) 



1824. Rothwell, S. Green Manuring on Rubber Estates. (Tropic- 

 Agric. and Magazine, XXXII [1909], p. 509—510.) 



1825. The Effect of green Manure on Rubber. (Suppl. to Tropic. 

 Agric. and Magazine, XXXIII [1909], p. 278.) 



1826. Bowie, G. A. Manuring of Rubber. (India Rubber Journal, 

 1909, No. 19, April.) 



1827. Bowie, G. A. Manuring of Rubber. (Tropic. Agric. and Maga- 

 zine, XXXIII [1909], p. 290—291.) 



Nach Indian Rubber Journ., XXXVII [1909], No. 8. 



1828. Mathiew, E. Account of Manurial Trial on young Rubber 

 Trees. (Tropic. Agric. and Magazine, XXXIII [1909], p. 200—203.) 



1829. The new rapid System of Tapping Rubber. (Suppl. to 

 Tropic. Agric. and Magazine, XXXII [1909], p. 192.) 



1830. The new System of Tapping Rubber. (Suppl. to Tropic. Agric. 

 and Magazine, XXXII [1909], p. 385—388.) 



1831. Rubber Tapping Methods. (Tropic. Agric. and Magazine, 

 XXXII [1909], p. 409—410, 1 pl.) 



1832. The Northway Tapping System. (Suppl. to Tropic. Agric. and 

 Magazine, XXXII [1909], p. 593-594.) 



1833. The New Tapping System. (Suppl. to Tropic. Agric. and 

 Magazine, XXXIII [1909], p. 77—80.) 



Erfahrungen. 



1834. The new System of Tapping. (Suppl. to Tropic. and Maga- 

 zine, XXXIII [1909], p. 89.) 



1835. The rationale of Rubber tapping. (Journ. Board of Agric. 

 British Guiana, III [1909], No. 1.) 



Nach einem Aufsatz im Tropenpflanzer. 



1836. Rubber-tapping Method. (Agric. News, VIII [1909], p. 212.) 

 Beste Art der Zapfung auf Grund der Untersuchungen Fittings. 



1837. The Early Tapping of Rubber. (Suppl. to Tropic. Agric. and 

 Magazine, XXXII [1909], p. 82—83.) 



