144 ANNUAL RECORD OF SCIENCE AND INDUSTRY. 



identical with rosaniline, giving the well-known fuchsin red 

 with acetic acid, and yielding Hofmann's violet, aniline green, 

 and aniline blue. 



Wright has made a careful study of the alkaloids con- 

 tained in the aconite family of plants. lie finds in the roots 

 of A.napellus the well-crystallized aconitine ; though some- 

 times roots purchased for those of this species yield a bitter 

 inert base, which he calls picraconitine. An uncrystallizable 

 base is probably also present. The alkaloid of A. ferox is 

 quite unlike aconitine, and is called pseudaconitine by 

 Wright. He suggests that the numerous uncrystallizable 

 products said to have been obtained from aconite were pro- 

 duced in the processes of extraction used. 



Hesse lias communicated a preliminary note, in which he 

 says he has found, in a rare cusco bark, an alkaloid which ap- 

 pears to agree with the cusconine of LeverkOlm, and to be 

 closely allied to the aricine of Howard. 



Glenard has investigated the alkaloid of ipecacuanha, eme- 

 tine. It was obtained in small hemispherical warty crystal- 

 line masses, which, on purification, gave milk-white crystals. 

 From the analysis of the alkaloid itself and of its chlorhy- 

 drate, the formula C 15 H 22 lSr02 is assigned to it. 



PHYSIOLOGICAL. 



Church has isolated and investigated the intense red color- 

 ing matter of Coleus verschaffeltii, using for this purpose 

 half a hundred-weight of the plants. During the crushing 

 process, alcohol mixed with sulphuric acid is added, and the 

 crimson solution is filtered, shaken with barium carbonate, 

 and the alcohol removed by distillation. A mass of deep 

 red resinous substance sinks to the bottom, which is the 

 coloring matter in question. When purified, it forms a brit- 

 tle solid of resinous aspect, reddish purple in color, soluble in 

 alcohol, slightly in water, having the composition C 10 H 10 O 5 . 

 The author believes it identical with many other red coloring 

 matters of plants, especially with the eenolin extracted from 

 red wine. 



Bou^arel has discovered a new red coloring matter in 

 plants, which accompanies the chlorophyll, and which he 

 calls erythrophyll. For preparing it, young peach leaves 

 were extracted first with ether, the ether poured oft", and 



