811 



the average, on a bundle of the grass (6 in. diam.) from each of 

 the clumps (5000) which may be safely counted upon to attain 

 maturity out of the 7260 planted out, the yield of an acre may 

 be estimated at 10,000 bundles; fifty such bundles yield a quart 

 (40 fluid ounces) of the oil, so that the total yield would be 

 200 quarts or 8000 ounces (Kew Bull. 1906, p. 364). In Brazil 

 the yield from fresh grass, according to season, is given at 

 0-24-0 -4 per cent. (I.e. p. 358). In Central Florida it is recom- 

 mended that the plants may be cut for the first time at froni 

 4-5 months after planting. Close cutting is not considered 

 profitable. It has been found by experiment that plants cut 

 when 2 ft. high, divided into three 8 in. lengths and distilled 

 separately, that the yield per cent, of oil from each portion was 



upper third 0-46, middle third 0-24 and lower third 0-1, the 

 citral content of these oils being 70, 78 and 82 per cent, respec- 

 tively. The yield of oil has been found to be on green material 



fresh, 78-1 Ibf 0-37 per cent, of oil; sun-dried, 93-1 lb., 0-31 

 and artificially dried in 100-3 lb., 0-32 per cent, of oil. The 

 yield per acre is given at 25 lb. of oil for the first year and 35 lb. 

 of oil for succeeding years (Hood, seq.). 



The grass may be grown as a catch-crop in rubber plantations 

 and it has been recommended for cultivation in places where 

 the " Tsetse " fly {Glossina pal^alis) — which conveys sleeping 

 sickness — ^is found in Tropical Africa as it is said to be obnoxious 

 to this insect (Bagshawe, Herb. Kew — specimen from Port, 

 E. Africa). 



m 



a 



in 



& Hofifmaim, pp. 285-289 (Pharmaceutical Review Pub, Co.> 



Mlwaukee, 1900). '' Cymbopogon citratuSy'' Stapf, in Kew 



Bull. 1906, pp. 322-335; pp. 357-358,— " Cultivation of 



Lemon Grass in the Malay Peninsula/' I.e. p. 364, Lemon 



Grass in Ceylon, Wright & Bamber, Roy. Bot. Gdn. Ceylon^ 



Circ. No. 19, Dec. 1906, pp, 263-270. ''Lemon Grass Oil 



Cultivation in Comm. Prod. India, Watt, pp. 457-460. 



'' Lemon Grass," Col. Rep. Misc. No. 64, 1909, Uganda, pp. 9-lQ 



with particulars of a Still. " Lemon Grass Oil "' in The 



Chemistry of Essential Oils, Parry, pp. 176-180. "Lemon 



Grass Oil," Parry, in The Perfumery and Essential Oil Record, 

 iv. Feb. 20th, 1913, p. 40.— Possibihty of the Commercial 

 Production of Lemon Grass Oil in the United States, Hood, 



U.S. Dept. Agric. Bull. No. 442, 1917, pp. 1--12. ^' Lemon^ 



Grass Oils from Seychelles," Bull. Imp. Inst, xviii. 1920, 

 {'' Aromatic Grass Oils "), pp. 340-342. 



Cymbopogon^ ^anteus, Chiov.; FL Trop. Afr. IX. p. 288. 



Verrtdc 



Broun) 



Maragr 



Sokoto, Kontagora, Lagos &c. in Nigeria, also known from 

 Cameroons, Gold Coast. Sierra Leone, Zambesi, Sudan and 

 Rhodesia. 



