316 
INK FOR THE MILLTON. 
mass, and clear the moulds of such pills as adhere. We are in- 
formed by Charles Ellis & Co., who are the agents for both of 
these machines, that the patentees are about to modify the rollers 
so as to make pills of three sizes. The chief difficulty in using 
the machine appears to be in getting the mass of such a consist- 
ence that the pills can be easily disengaged from the matrices, 
which are slightly greased. The necessity of using oil will be an 
objection to its use in some cases, but perhaps soap or some other 
substance will answer ; our experience with the apparatus is too 
brief to venture an opinion. 
INK FOE THE MILLION. 
To the Editor of the American Journal of Pharmacy : 
The following formula for making a very superior ink is not 
generally known. The facility of its preparation and its almost 
incredible cheapness (about two cents a gallon,) render it worthy 
a place in your Journal. 
J$ 12 oz. avoird. Ext. Logwood 
J oz. « Bichromate Potash 
5 gallons water ; 
Dissolve the ingredients separately in water and mix them toge- 
ther, in a short time the ink will be fit for use. 
An analysis of the above would be very desirable. 
As an instance of the very great coloring property of haema- 
toxylon, I have found that l-100th of a grain dissolved in 
4,000,000 times that quantity of water, will be tinged a fine 
pink color by the addition of a little aqua ammonia. 
Yours truly, 
W. H. Pile. 
Philadelphia, Sept. 13, 1852. 
Note by the Editor. As Dr. Pile's formula appears to be based on that 
of Professor Kunge, noticed on a former occasion, we will annex some 
observations on fringe's ink, taken from the Pharmaceutical Journal, 
Aug. 1852, page 71 : 
"Professor Runge's Writing Fluid. — One of the least expensive formulas 
for the manufacture of a writing ink, is that given by Professor Eunge, 
