256 
IMPROVED DRUG MILL. 
little labour, reduce dry drugs, as roots, barks, seeds, and 
even leaves, to a state of division fit for the action of liquids, 
by displacement. Senega, Ipecac, Blood-root, and other irri- 
tating substances which give much trouble in a mortar, are 
comminuted with ease and dispatch. As the proximity of the 
grinding plates can be regulated by an arrangement attached 
to the back plate of the mill, the fineness of the powder can be 
controlled to suit the character of the drug, and the particles 
are much more uniform than when obtained by contusion. 
Though not designed to supersede the mortar and other in- 
struments for making fine powders, yet manyTriable substances, 
by passing and re-passing several times, afford a large pro- 
portion of powder by means of a sieve. It should be under- 
stood that when tough roots or bark are to be treated, that the 
plates should be at first w T ide apart. 
We have tried the mill with a variety of drugs, such as 
Colombo, Gentian, Rhatany, Senega,-Fennel-seed, Sarsaparilla, 
Liquorice-root, Bitter-sweet, &c, and can say it leaves little to 
be desired. Its success, however, requires that the substances 
be dry, and when fibrous, like Sarsaparilla and Liquorice, that 
they be previously cut in short lengths. 
The price of the mill places it within the reach of most drug- 
gists and apothecaries, and as "time is money," when the de- 
mand for its services is considered, it will save its cost in one 
year. The mill can be seen at Charles Ellis & Co.'s, who 
are agents for this city, or at A. B. & D. Sands, of New York, 
who, we are informed, are the general agents for the proprietor? 
Beriah Swift. W. P. Jr. 
