Miscellaneous Intelligence. 439 
- black precipitate below a colorless solution ; in the other a brown- 
viscid liquid. But if we watch the process from the outset, we shall 
Consequence of excessive intensity of color. Lampblack, for 
yi a state of excessively fine division is yellowish brown. Ink 
nelude: 
probable,) that the current opinion, ascribing the fad- 
the production of sulphid of silver, is correct. 
