622 Chemisches, Pharmaceutisches. 



layer, and vinous red in a thicker layer by transmitted light. It is 

 not fluorescent. Two specimens received in the Indian museum 

 Calcutta had strong odours, the first of butyric acid, the second 

 piperaceous. The oleoresins were freely soluble in 90°/^ alcohol ether, 

 Chloroform, petroleum ether and glacial acetic acid. A Solution in 

 glacial acetic acid gives a red deposit with one drop of sulpheric 

 acid, while copaiba baisam is said to give a blue colour when 

 treated in this way. 



The following analysis is given : 



Tinnevelly. South Kanara. 



Sp.gr 1.0124 1.0068 



Volatile oil (per cent) 41.1 39.48 



Acid value 97.2 99.8 



Ester value 9.0 12.6 



Saponification value 106.2 112.4 



lodine value 130.3 119.8 



Acid value of Resin 159.8 157.7 



E. Drabble (Liverpool.). 



Hooper, D., Notes on Indian Drugs. (Pharm. Journ. Sept. l^t 

 1906.) 



Kaladana {Ipomaea hederaceci). Seeds yielded Moisture 9.40, 

 Fat 14.02, Resin 8.05, Albuminoids 22.68, Carbohydrates 31.55, 

 Fibre 8.40, Ash 5.90. The seeds are comparatively rieh in nitrogenous 

 substances, but the presence öf a nauseous tat is disadvantageous 

 for internal administration. Manna from Schrehera Sivietenoides Roxb. 

 an exudation from the free. Hitherto no mannalike exudations found 

 in India have been derived from Oleaceous plants. Schrehera, a 

 member of the Oleaceace is related to Fraxinus which yields the 

 commercial manna of Europe. 



Napawsaw {Picrosnia javanica BL). This tree bears a bark con- 

 taining a bitter principle allied to if not identical with quassiin. 

 It has an advantage over Cinchona bark in not containing tannin. 



Ishwarg [Rhasa stricta Decn.). The leaves contain a large quantity 

 of alkaloids one of which is volatile. The non-volatile alkaloid some- 

 what ressembles that of Aspidosperma. The leaves are taken as a tonic. 



The young shorts of Dendrocalamus HarniUonii contain as- 

 paraqui which in fermentation yields an acid principal apparently 

 allied to aspartic acid. The acid food product made from this is 

 termed Gass-tenga and is eaten in Upper Assam. 



E. Drabble (Liverpool.). 



Thomson, R. T. and H. Dunlop. On the Examination of 

 Olive, Linseed and other Oils. (Analyst, Sept. 1906.) 



The Wijs' method of determining the iodine value has been 

 used for a number of oils and the results are given in tables. The 

 oils used were extracted by pressure or by means of Solution in 

 CSj so that there is no doubt as to their genuineness. In the olive 

 oils the oil obtained by pressure was almost precisely similar to 

 that obtained by extraction of the residue with CS^, a genuine 

 Olive oil may vary in iodine value from 81 to 89. The mogador olive 

 oil had the very high value of 94.3. Free fatty acids have a great 

 influence on the refractive index of the oil, lowering it very con- 



