794 SOLANDRINE, A NEW MIDRIATIC ALKALOID. 



Solandrine more closel}^ resembles hyoscine. Both are thick 

 syrups in the free state, yield white ppts. with alcoholic mercuric 

 chloride, and form cubical platinic chlorides. It differs from 

 hyoscine in its aurochloride, in not reddening phenolphthalein, 

 and by the fact that it yields atropic instead of tropic acid when 

 hydrol3^sed. 



Though much still remains to be done in working out the exact 

 constitution of the alkaloid, I consider that the above results 

 afford sufficient evidence of the existence of a new tropeine 

 alkaloid in Solandra Icevis, for which, therefore, the name 

 Solandrine is proposed. 



I have to express my best thanks to Professor Anderson 

 Stuart for the numerous facilities he has kindly afforded me in 

 carrying out the above work in his laboratory 



Corrigendum. — I take the opportunity of drawing attention 

 to a necessary correction in my paper on * The Stinging Property 

 of the Giant Nettle-tree' (These Proceedings, 1906, xxxi., p. 530). 

 In the table on p. 536 the inorganic matter has been inadvertently 

 included twice; the table should read as follows : — 



Also on p.535, line 24, /or 4-74% read 3-74 



