APPENDIX. 



183 



reddish hue from mature Rauchi leaves. A partial examination of 

 some of the ash sho wedthat they contained the following percentages : 



Samples from 



Solublo 



constituents. 



K cal. as 

 KHO. 



Darjeeling 

 Alipore, {>alcutta 

 Arcuttipore, Cachar . 

 Matelli 



• • ■ 



$% • 



• •• 



9 • • 



« • 9 



■ • « 



• *• 



44-42 

 34-GO 

 59-02 

 64-17 



29-26 

 19-13 

 29-84 

 31-36 



So that both nitrogenous and potash manures will probably be 

 required in the future to keep up the yield from the same plantation. 



Fruit of Erythroxylon Coea, 



The fresh ripe fruit weighed, on an average, *! 58 gram each ; they 

 were bright scarlet in colour, andpossessedadistinctly sweetish taste, 

 but though masticated at various times, no physiolgical action on the 

 mucous membrane of the mouth was observed. Dried in vacuo over 

 sulj^huric acid, the original tint was only slightly deepened, and this 

 method of desiccation was employed in preparing the frait for 

 analysis. 



Microscopically described, tlie fruit from without inwards presents 

 first a single row of biick-shapod cells forming the epidermis ; within 

 them is a single row of very large cells containing a mass of 

 starch granules and scarlet colouring matter. Next comes the pulp , 

 composed of parenchymatous cells, containing starch and granular 

 matter. Then the shell, composed of an outer layer of stony cells, 

 like bone cells, which are of considerable length ; within this layer is 

 a row of scalariform vessels, and then several rows of pitted vessels. 

 Then the almond, the cells of which are full of starch. 



The petroleum ether extract was a deep reddish semi-solid residue, 

 which, on microscopic examination, was found to contain laraeHse and 

 needles of a claret colour. It contained no alkaloid, and melted at 

 34—35° 0. A portion was saponified with alcoholic potash, and when 

 cold agitated with ether. At 189— 1 91° this extract melted to a clear 

 yellow H(iuid, which cooled to a brittle transparent mass. Heated 

 between watch-glasses for several days, a white sublimate was obtained , 

 but the amount was far too small to admit of a melting point 



