8i4 



THE TROPICAL AGRICULTURIST. 



[May I, 1884' 



No. 8 is of large-leafe(3 offshoots of C. Ledgerianaj the 

 alkaloid properties of which point to a hybridization with 

 C. succlnthraa.s the habit does. Tlie ditfere.nce between orig- 

 inal and two year old renewed barks of C. officinalis and 

 C Cidisai/a Schiihkraft is seen in the following review: — 



On the whole the bark of C. o^chialh may be said to be 

 better after renewiug, because it contains more quinine on 

 an average than the original bark. The most remarkable 

 feature in the forming of new bark i« the great* decroa.se, 

 and generally the total disappearance, of the entire quantity 

 of cinchoaidine which appeared in the old bark, whilst the 

 quiiiidine increases. The increase of quinine in C, Calisaya 

 kchnhkrift was so little, that it was decided not to apply the 

 partial stripping to this variety. From the examination of 

 renewed succirubra barks we learn that the nature of the 

 covering product's little change in the nature of the alkaloids 

 that appear in the renewed bark. The bark (29-51) renewed 



under indjock covering showed the same increase of quinine 

 and decrease of cinchonidine as is seen in bark that had 

 been renewed under moss. And the same peculiar change 

 was observed even in renewed bark without covering (33). 

 The renewed bark of a young Ledgeriana on the private 

 plantation Djajagiri was also very luxuriant. In 1879 a strip 

 of bark was cut off, which contained 5'88 per cent of quinina 

 %vith a total of 7"44 per cent of alkaloids. At the expiration 

 of nearly a year this tree was rooted up by a storm, and 

 the renewed bark of eleven months old collected. This 

 now gave on analysis (4) quinine 086, with a total of 8-79 

 l>er cent of alkaloids. The analyses of samples of bark from 

 the crop showed little of importance. Mention is only 

 made of the alkaloid found in officinalis bark taken from 

 trees dug up at Tjinjiroen and which had been sickly for 

 years; aud of C. SaiicifoUa dug up at Kioen-Goenoeng, both 

 because that variety grew badly there, and the room they 

 took up could be more profitably used for succirubra. In 

 accordance with Government resolution of 5th December 

 1879, No. 23, the Director of the Government Cinchona 

 Cultivation left this on 19lh August for Ceylon and British 

 India, and returned on 31st December. 



Bandong, 14th February 1881. 



ajooL'3'50':DQOoooooooooo 



— ■^r-«tD«-rOOOO-*00>CQOLOO<0 



.,---. , — . ; :m -M (M o r: ^i •-» :r o 



•-"-'^rcTcr::^c>irt?3ccro-^'3i-3'Wc*rocce) 



:■ c; — c = ~ - o 

 : O -; C 'C O 5 O 



• ^ r^ cs T. t^ ii ^ 



O O C5 ?1 CO 

 C3 — • O 'M -J" 

 -f X X -X> lO 



^S£ 



■ '" ■ ifi — . ■ CI ^ " S r^ r^ 

 Ql Ol "M 



" o o 

 t-O-Q 

 ^00 



t-~'Ou:;r:oc:C:Oii7:r;Ou^OQO:C30?<100 



■^"=■—■300" — i>~o^t^oaoo?;wO 

 : ^ .-: o -T t- t-'ij i-^ o Oic L- 1-0 x-oia X X o ■!? 



O re 3 CJ .T O — r: i-l L-; r^ D- X '51 — tr^ t— '- 5^ "J- lO 



rD -s- If; rt ;t .■: oi -f l- ^ — fh ro — -c c" :r3 o 



fflOO 



o t- ra 



t-c3: X 



.= 88^5 



iCOO 



r-iOO t^ ri >- — ( r 



ci o X X -1 — o ■: 



■^j o if; o 

 . ci ;3 t: cj 



- — ^ ■^ — 4 — 



C; Q 00 00 



w ?5 00 00 



X 3; ooi ox 



COiO !D O !?1 O 



00 5 c 00 



00 o o 00 



lO CC O O If; o 



1^ (M O t- C^ OS 



o rM 00 !M -n- eo 



o; r-H 00 



:5^ 



c> x' 

 *- x 



o -fl 



O 4; 



SH .^H 



iJ 



a Situiition ami 3vpr;i^e elevation abovp thi' ?:i'a of tlie vlaiit;itions. 

 The ele\*aiiou triven in metres, b Present on ultimo. Plants in ihe 

 nurseries : Leiigeriana. d Succirubra, e Officinalis. Plants in the 

 (^■pen frroimd. f Ledgeriana. g- Cali^mya and H:i»*k;a'Iiaua. h Sucoiru- 

 bra and (-'alMptcni. i Officinalis, j Lancifolia. k Micrantha. (jraud 

 TotJil of iilaiii^, 



(a) IiK'lu«Unt; JnWO cuttings \n grift. 



{/>) IiiclufUii^ cuttings and ^mfte (ex^Ui*iivt' of the n,70(» 

 ori(5in;il Lttlgerianas), 



