136 



THE TROPICAL AGRICULTURIST. 



[August i, 18^2. 



The result of the working of these barks lias been as 



follows : — 



200 bales 50 Bales 

 of Crown of Total. 

 Bark. Red Bark. 



lb. 

 81-5 

 143 



lb. 

 1,045-5 

 149-5 

 25 — 



71-25 71 

 404 240 



it will be seen that, as, 

 yield of sulphiite of 



lb. 

 1,127 

 292-5 

 25 



142-25 

 644 



Sulphate of quinine ... 



„ of cinchonidine 



„ of quinidine... 



Cinchonitline alkaloid ... 



Amorphous sulph. hquor 



From the foregoing figures, 

 on the former occasion, the 

 quinine has been in excess of the estimated result, 

 and tbe sulphate of ciuchonidine obtained somewhat 

 under the expected yield, but the cinchonine alkal- 

 oid shows a slight excess. The sulphate of quinine 

 shows an excess of 115 '74 lb., or over 11 per cent. 

 So far as the outturn is concerned, the result is there- 

 fore satisfactory. 



With regard to the financial results of the experi- 

 ment, it appears from Messrs. Jenkins' and Phillip's 

 report of tlieu- sale that the average prices realized from 

 the sale by public auction of similar parcels of bark form- 

 ing part of the same consignment, were — natural crown, 

 5s 8(Z; renewed crown, 8s lid; mossed crown, 10 bales 

 at 6s lOd and 35 bales at 6s ; branch crown, 3s 4d ; 

 5d ; mossed red, 3s. At these 

 of the above-mentioned barks was 



natural red, 2s 

 prices the value 

 as follows : — 



Natural Grown 

 Renewed 



LB, 



3,265 at 

 10,059 at 



,r J (10 bals. l,025at 

 Mossed ;' j 35 ~ 



Branch 



3,58 tat 

 2,218 at 



1. d. £ s. 



5 8— 925 1 



5 11 =4,481 12 



6 10 = 350 4 

 G 0=1,075 4 

 3 4 = 359 13 



20,151 

 Deduct allowance for 

 dust 3 per cent."l 

 „ tret, 4 do | 



„ discount 2^ do >-10J per cent= 

 „ brokerage, &c., j 

 ' 1 per cen. J 



Natural red 2,035 at 2 



Mossed ,, ... 



7,204 15 U 



756 8 



( 



5 = 245 18 

 3',b69at 3 0= 460 7 



-6,148 7 11 



Deduct allowance lOi per cent. = 



706 



74 



The value of tlie products obtained therefrom at the 

 market prices of the day was — 



Crown JSarks. 

 L.B. s £ s d 



Sulphate of 

 quhiine ... 1,0455 at 163=8,520 16 6 



SiUphate of 

 cinchonidine 149-5 at 34 =254 3 



Sulphate of 

 quiuicUne ... 25 at 76 = 95 



Cinchonine 

 alkaloid ... 7 1 25 at 15 = 53 S 9 



Amorphous 

 sulph. hquor. 404 at 1 = 20 4 



8,943 12 3 

 Deduct working exi)enses* ... 1,007 6 6 



7,936 5 9 



* Including a proportion of 211 paid for fire in- 

 surance at factory. 



- 633 1 11 

 Total...£7,080 9 10 



Red Barks. 

 L.B. s £ 



d 



Sulphate of 

 qiuniue 



Sulphate of 

 cinchonidine 



Cinchonine 

 alkaloid 



Amorphous 

 sulph. liquor. 240 at 1 = 12 



81-5 at 163= 664 4 6 

 143 at 34 =243 2 

 71 at 15= 53 5 



Deduct working expenses* 



972 11 6 

 272 18 



699 13 6 

 Total ... £8,635 19 3 



From these figures it will be seen that the total 

 net value of the products obtained from the bark is 

 8,635^ 19s 3d as compared with 7,080; 9s lOd which 

 would have been realized for the bark, if it had 

 been sold with the remainder of the consignment of 

 which it formed a part. The net gain by manufact- 

 uring on account of Government instead of selling 

 the bark hns thus been 1,555^ 9s 5d or nearly 22 

 per cent. Similarly, it will be seen that the net gain 

 in respect of the crown barks alone is 23 per cent 

 and in respect of the red barks nearly lOf per cent. 

 These results are obtained by taking, for the purpose of 

 calculation, the price of quinine in May last, the 

 date when the manufacture had been completed and 

 the products were ready for delivery. The result of 

 this experiment is considerably more satisfactory from 

 a financial point of view than the previous one, which 

 showed a net gain of only 9 per cent more than 

 would have been realized had the bark been sold in 

 the usual manner. It m.iy be a question for consider- 

 ation whether in future it will be advisable to work up 

 the quinoidine into liquor unless it can be shown that 

 there is likely to be any demand for it. A preferable 

 plan probably would be merely to precipitate the 

 alkaloid and not purify it, but set it aside in its rough 

 state till such time as some use may be discovered for 

 it. In the foregoing calculations, I have taken the 

 value of it at merely the cost of manufacture, viz.. 

 Is per ft. 



As on the former occasion, the gain is chiefly 

 obtained from the crown barks. In the previous 

 experiment, the products from the red barks were 

 obtained in the form of mixed alkaloids, and this 

 resulted in a loss of 10 per cent, in value as compared 

 with what v^'OHld have been obtained by the sale of 

 the bark. I then suggested that "it might, perhaps, 

 be found more advantageous, from a pecuniary point 

 of view, to extract the several alkaloids separately 

 from the red bark instead of making cinchona febri- 

 fuge." The result has quite fulfilled my auticipations, 

 for it will be eeen from the foregoing figures that the 

 value of the alkaloids separately extracted is G991 

 13s Gd, taking the price at lG3s, as compared with 

 about 6S'2l, the net price whicb would have been 

 obtained for the bark if sold, showing a g.ain as already 

 stated of nearly lOf per cent, instead of a loss of 10 

 per cent., notwithstanding that the red barks used in 

 this experiment were very considerably poorer in quin- 

 ine, sulphate than those operated upon on the former 

 occasion. It may also be noticed that the value of 

 the sulphate of quinine alone extracted from the red 

 bark amounted to more than the bark would have 

 sold for. 



This alteration of the mode of dealing with the red 

 bark is the most important part of the present experi- 

 ment, and deserves further examination. In tlie former 

 experiment 4,277 lb of red bark, of a net value ol o96l 



* Including a proportion of 21/ paid for fire in- 

 surance at factory. 



