cover image: Journal of the Agricultural and Horticultural Society of India  New Series  1888

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Journal of the Agricultural and Horticultural Society of India New Series 1888

1888

The percolation of the leaves with acidulated alcohol decomposes the natural salt of cocaine which exists in the leaves and the alkaloid is disolved in the alcohol as sulphate of cocaine. [...] I thought however that it might possibly be of interest to make quantitative determinations of certain salts and in four samples of the leaves I determined the percentage of salts soluble.ancl insoluble in water; the total amount of potash salts contained in that portion of the ash which was soluble in water and the alkalinity of the soluble salts expressed in terms of potash. [...] Taking the total ash contents of the leaves calculated on the anhydrous leaves and comparing the results with the pecentage of alkaloid calculated in a similar manner it would appear that in many of the samples examined the percentage of alkaloid is inversely proportional to the ash ; but in the case of the sample from the Matelli tea gardens a large pecentage of ash is associated with a [...] In estimating the alkaloids contained in coca leaves and using relativeky the same amount of solvent and leaves in all the experiments I was struck with the variations in the amount of coca-tannic acid present in the various 'samples. [...] In the sweet leaves the bitter taste of the cocaine is marked by the presence of the other alkaloids. while in the bitter leaves the taste of cocaine is predomi7.
agriculture environment
Pages
186
Published in
India
SARF Document ID
sarf.120105
Segment Pages Author Actions
Frontmatter
i-ii unknown view
Note on Erythroxylon Coca Grown in India
127-170 C.J.H. Warden view
On the Work of the United States Entomological Commission
171-186 E.C. Cotes view
Correspondence and Reports relating to the Improvement of Cattle and horses and Production and Quality of Wool in Bengal
187-259 unknown view
A Contribution to the Study of the Mango Weevil
260-277 unknown view
Note on Lo-Kao:The Chinese Green-Dye Yielded By Various Species of Rhamnus
278-281 D. Prain view
Correspondence and Selections Annual Report of the Royal Botanic Garden for the Year 1886-87.
25-33 unknown view
Backmatter
i-xx unknown view

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