Botany and Zoology. 439 
glows vividly and becomes violet chlorid. Chlorhydric acid dissolves it 
easily to the blue protochlorid. Dilute sulphuric acid which dissolves 
iron easily is without action upon chromium; but on gently warming a 
very violent action sets in and the remaining metal now acquires the 
property of being easily dissolved after washing even by the most dilute 
sulphuric acid. Concentrated and boiling nitric acid does not attack it in 
the least—Annalen der Chemie und Pharmacie, B. exi, p. 230. 
Ww. G. 
; IL BOTANY AND ZOOLOGY. 
