12 MACHINE FOR MAKING BLUE MASS. 
ed to the constant power derived from steam when the mo- 
tion can be continued until the mass was finished, without 
the delay and trouble of removing it so frequently from the 
cylinder which also occasions loss, yet with a smaller 
charge, say ten pounds, they think the machine fully ade- 
quate in five hours to finish it when turned by hand, and 
consequently that it will prove extremely useful in the 
hands of those druggists who may desire to prepare their 
own mass. It would probably be to the advantage of the 
inventor to make a size smaller in which the cylinder will 
be of less height and the arm of the crank consequently 
shorter, proportioned to the shorter stroke of the piston, 
which would give the operator more power and make the 
removal of the mass less difficult. Another size might be 
made for the manufacturer capable of acting on a charge of 
100 lbs., the force' being derived from steam or other power; 
and as a few hours more or less is of little consequence in 
this case, there would probably be great advantage from 
using the machine 10 or 12 hours instead of six. 
In conclusion the committee would observe that this appa- 
ratus is a very valuable addition to the pharmaceutical 
laboratory, as it places within the reach of every druggist a 
means of making blue pill mass of good quality within 
a reasonable time. 
They therefore would recommend the apparatus to the 
favorable consideration of the College, and believe it worthy 
of the adoption of those members of the profession who 
wish to manufacture their own mercurial pill mass. 
William Procter, Jr. 
Thos. P. James, 
Wm. J. Jenks, 
Ambrose Smith, 
Edward Parrish, 
John H. Ecky, 
Philadelphia, Dec, 18M, 1848. Committee. 
