July, 1911.] 



IS 



Oils and Fats, 



to 0-917 a D — 11°53 to-14°16, total gera- 

 niol 57-8 to 62'1%. The citronellal con- 

 tent was from 24-4 to 33-6%. All the 

 four samples gave a clear solution with 

 1 vol. of 80% alcohol, the solution becom- 

 ing opalescent upon the addition of 10 

 vols, of the solvent. 



Of three Maba-pengiri oils from 

 Oymbopogon Winterianus, Jowitt* the 



highest yield, 0'77%, was obtained from a 

 grass distilled in November, two samples 

 ofgrass distilled in June and August 

 only yielding 59% each. The November 

 oil also gave the highest total-geraniol 

 content (84-8% as compared with 79 and 

 83.5% for the two others); for the rest 

 all the three oils agreed with Java 

 citronella oil. 





Patent 



Plant. 









'o 

















'3 

















No 



11 u. 



|-? i-ifo 11 1 |\J o Wl 



13 U LcLU HScxl ±y tXIllfi 









og 



•-H QJ 



O fl 





clCC.Ul LI 1IJ 1< LU O Ld pi o 



iid rive iiame. 



die; 



ID 



ap 



<D 



/o 





( it ororm i n q t J /"\ v\ \ 

 ^LltJttJI JLLLIIJciLlULl* ) 









% 



% 



1 



1 



C. Nardus, Rendle 



Maha-Naran Pengiri 



0'920 



—307' 



516 



27-6 



24-0 





var. lannsBi, btapt. 















(Typieus.) 















d 







0'905 



— 6°32' 



63 2 



38-4 



24-8 



o 

 d 





■ i 



0'912 



+3°22' 



57*2 



36'2 



21-0 



4 



• > 



Reeu-Naran Pengiri 



913 



+ 2°35' 



43 - 5 



24-6 



18-9 



5 



•» 



)> 



0'894 



— 3°20' 



47'7 



25*8 



21-9 



/> 







»» 



)> 



Light-leaved Mana 



■ >i 



U 909 



+ Z o 



53'5 



300 



23-5 



7 



) » 



0'909 



+ 4°54' 



56-5 



38-6 



179 



8 



i » 



0-908 



+3°30' 



64 



30-2 



33-8 



9 



» » 



Small-leaved Mana 



0'906 



+ 3°7' 



57 -0 



34 '4 



22 6 



10 



> > 



j > 



0'909 



+ 3°20' 



56-3 



36-5 



19-8 



11 



51 



Sour Mana 



0'935 



+ 16° 



35-3 



16'3 



19'0 



12 



51 



# 1* 



Very broad-leaved 



0'967 



+ 15°50' 



26 9 



6-3 



20 6 



13 



t> 















Mana 



0'926 



+ 1°31' 



48'7 



25-8 



229 



14 



' ) 



1 1 



Given as "Maha-Pen- 

 giri " but probably 



U 906 



— Z4 



64 - 7 



365 



28'2 



15 



> ) 

















" Mana " 



0-912 



— 1°38' 



48 6 



25-5 



23 1 



16 



II 



ii 



0-909 



+2°18' 



56-4 



35-8 



20-6 



17 



C. Nardus, Rendle var. 



Glaucous-leaved 













Confertiflorus, Stapf. 



Mana 



913 



+ 12°12' 



46-5 



29 3 



17-2 



18 



'5 



*i 



White-stemmed 



C-900 



+ 4° 



61-2 



43-7 



17 5 



19 



)' 















Mana 



0-908 



+ 1°27' 



54-8 



30-2 



24-6 



20 



55 



s > 



0-904 



+ 2 C 26' 



58-0 



24-8 



33-2 



21 



»5 



Red-stemmed Mana 



0-929 



+6° 19' 



39-1 



19 4 



19-7 



22 



1 1 



n 



0-909 



+ 0°58' 



57-0 



28-9 



28-1 



23 



C. Nardus, Rendle 



Lenabatu-Pengiri 













closely allied to var. 



(not genuine) 



905 



+ 2°46' 



' 52-0 



31-1 



20-9 





Confertiflorus. 











24 



i) 





0-902 



— 2°ir 



63-1 



39-5 



23-6 



25 



ii 



ii 



0-907 



— 0°6' 



64-2 



44-8 



19-4 



In connection with the above, refer- 

 ence should be made to an abstract of a 

 paper by de Jong on citronella grass 

 which is published in the Chemist and 

 druggist. We have already referred to 

 these investigations by de Jong and 

 may now content ourselves with adding 

 a few details to the particulars then 



* Comp. Report October 1909, 41. Stapf also 

 considers it correct to designate the Maha- 

 Pengiri species (Winter's grass) with the special 

 name of Cymbopogon Winterianus. 



communicated. De Jong proposes to call 

 the M aha- Pengiri species, which is chiefly 

 grown in Java, by the name of Andro- 

 pogon Nardus, Java, and to designate 

 the Lenabatu species, which is typical of 

 Ceylon, A. Nardus, Ceylon ; the former 

 would thus correspond with Cymbopogon 

 Winterianus, Jowitt ; the latter with C. 

 Nardus, Reudle, lenabatu. it is true 

 that Maha-Pengiri grass yields more and 

 better oil than does Lenabatu grass, but 

 it requires a richer soil and more careful 



