§ 189. BARER ALKALOIDS. 203- 



Conessine or wrighiine, see Hainep' and Stenhouse.^ It is very 

 spaoringiy soluble in alcohol, ether, and bisulphide of carbon. 



Harmaline and harmine, compare Fritsche.' The former yields 

 yellow salts with acids — the latter colourless. Both are some- 

 what sparingly soluble in alcohol. 



Surmamine is also sparingly soluble in spirit. (Compare Hiitten- 

 schmidt and Winkler.*) 



Arihine, see Eieth.^ It is sparingly soluble in ether, as is also 



AtJiero^etynine, com'paxe Zeyer ;" and Blueadine, compare Hesse. "^ 

 The latter is colourless, but is converted by dilute acids into 

 deep red rhoeagenine. 



Vwline, compare Boullay;*for leberine, see Maelagan* (c£ § 1 71); 

 for ielladonnine, see Hiibschman j^" for cocaine and hygrine, compare 

 Niemann, Wohler, arid Lossen.^^ Concentrated hydrochloric acid 

 decomposes cocaine into benzoic acid, and the alkaloidal ecgonine. 



For chlorogenine ang -porphyrine see Hesse.^^ Chlorogenine in 

 acid solution shows a pov/eiful blue fluorescence. 



Corydaiine, compare Wackenroder, MiiUer and Leube, Boedecker 

 and Wicke.^* The alkaloid dissolves in cone, sulphuric, acid, with 

 dark red colouration. 



Cytisine, compare Husemann and Marme.^* 



' Pharm. Joum. and Trans. [2], vi. 432. 



2 Ibid. [2], V. 493 ; Sohweizerische Wochenschrift f. Pharm. 172, 174, 

 1865. 



' Chem. Centralblatt, 1847-49, 1863, 1854. See aim Goebel, Annal. d. 

 Chem. und Pharm. xxxviS. 363, iS41. 



• Gmelin's ' Handbook of Chemistry.' 



" Chem. Centralblatt, 903, 1861 (Amer. Joum. Pharm. xxxiv. 395). 



• Vierteljahresschr. f. pract. Pharm. x. 513. 1861 (Amer. Jomrn. Phann. 

 xtxiv.' 166, XXXV. 453). 



' Annal. d. Chem. und Pharm. (Suppl.) iv. 50 ; cxl. 145, 1866 ; cxlix. 35, 

 1869 \Aiaev. Jourii. Pharm. xxxviii. 568, xxxix. 122, xlii; 396). 

 8 Kepert. f. Pharm. xxxi. 37. 



• Annal. d. Chem. und Pharm. xlviii. 109, 1843 ; Iv. 105, 1845 <Phann.' 

 Joum. and Trans. [1], iii. 177 ; v. 228). 



" Yierteljahresschr. f. pract. Pharm. viii. 126, 1859. 



" Ibid. ix. 489, 1860 ; Annal. d. Chem. und Pharm. cxxi. 372,-1862 (Amer. 

 Joum. Pharm. xxxii. 450, xxxiii. 122, xxxiv. 406). 



'* Annal.' d. Chem. und Pharm. (Suppl.) iv. 40. Muller's alstonine from 

 . Alstonia constricta is probably a mixture of these two alkaloids (Hesse). 



" Arohiv d. Pharm. xlix. 153,' 1847. Vierteljahresschr. f. pract. Pharm. 

 viii. 536, 1859'; ix. 524, 1860. Annal. d. Chem. und Pharm. cxxxvii. 274,. 

 1866. . (See Bentley, Pharm. Joum. and Trans. [2], iv. 343, 1862 ; Amer.. 

 Joum. Pharm. xxxiii. 112). 



" Chem. Centralblatt, 781, 1865 ; and N. Jahrb. f. Pharm. xxxi. 193, 1865 

 (Pharm. Jourri. and Trans. [3], i. 682, 1871). 



