DE. E. FEANKLAND’S EESEAECHES ON OEOANO-METALLIC BODIES. 415 
I have, in fact, ascertained that a considerable amount of the total product of zincethyl, 
obtained in an operation in the copper digester, is decomposed during the subsequent 
distillation, — one of the products of decomposition being metallic zinc in a finely divided 
state, which is always found in large quantity interspersed throughout the iodide of zinc 
left in the digester. The temperature required to expel the ethereal solution of zinc- 
methyl from the digester is less than 140° C., whilst zincethyl cannot be wholly expelled 
below 190°, or even 200° C. 
