370 Journal of the Asiatic Society of Bengal. [November, 1912.} 
It need scarcely be pointed out that hence arises a simple 
method of detecting and estimating ferri-cyanides in presence 
of ferro-cyanides. We are at present engaged in studying the 
dynamics of the above reaction, expecting it to be a multi- 
molecular one. 
ONIN ANS Sa iy ta lt a Ong NT a 
