Du Mez—The Galenical Oleoresins. 945 
1884 
Parish’s Treatise on Pharmacy, p. 755. 
A percolator of tinned copper is surrounded by a jacket of 
the same material; the receiver is a copper vessel with two necks 
into one of which the percolator is secured, the other is connected 
with a pipe leading to the closed head of the percolator which is 
also jacketed; on the other side of the head is a perforated plate 
60—S. A. L. 
