230 ON JUNIPERUS VIRGINIANA. 
changed by the action of the gastric juice, such as the lactate 
of the protoxide of iron. The citrate, malate, tartrate, and 
acetate of the protoxide of iron, fulfil equally the same con- 
ditions. 
ART. XXXIII.— AN INAUGURAL DISSERTATION ON JUN1- 
PERUS VIRGIN I ANA. By Wm. J. Jenks. 
C Extract from an Inaugural Eswy. J 
Medical Properties. 
Although the leaves of this tree are generally considered 
inferior to those of Savine, there can be no doubt but that 
their preparations, if rightly administered, are capable of pro- 
ducing beneficial results. Their effects upon the animal 
economy are gently stimulant, emmenagogue, diuretic, and, 
under favorable circumstances, diaphoretic. As a diuretic 
it is said they have been advantageously used in dropsy, and 
as a diaphoretic in rheumatism. 
"An ointment made by boiling the leaves for a short time 
in twice their weight of lard, with the addition of a little 
wax," is peculiarly efficacious as an application to blisters, 
maintaining a constant purulent discharge. 
The essential oil, when given internally, acts as an emme- 
nagogue; applied externally it is an irritant and rubefacient. 
It is requisite in the administration of it that great care should 
be taken, as dangerous consequences have accrued from the 
improper use of it. 
Chemical Investigation. 
Although the red-cedar is a native of our own country, 
and its evergreen branches are conspicuous throughout all 
