REVIEW — COGSWELL ON IODINE. 
293 
u Dr. Elliotson refers on many occasions to a species of coryza, 
characterized by pain in the nose and forehead, and increased dis- 
charge from the nasal passages, as occurring while his patients 
were using the hydriodate of potash.” 
“ A diuretic effect has been very commonly observed indeed, 
“ Dr. Elliotson considers the diuretic action to be its principal 
effect.” In my own practice, so far as the horse is concerned, I 
can confirm this. A horse who has within this last month been 
taking a drachm of the hydriodate morning and evening for a pul- 
monary affection, has had no visible alteration produced by the 
medicine, save inordinate staling. 
Ptyalism is said to have been produced by it on a child. 
In addition to its medicinal virtues in the cure of bronchocele — - 
which are now by no one doubted, in man, dog, and horse — 
Dr. Baron “ conceived the hydriodate of potash to have been 
productive of great benefit” in phthisis. In animals — in parti- 
cular in the monkey tribe — Mr. Youatl. has tested it in the same 
disease with apparent benefit. 
“ To draw a comparison between the effects of iodine and iodide 
of potassium is a matter of some difficulty.” “ Both affect the 
salivary and absorbent glands, produce iodism, and cure bron- 
chocele, in whatever way they are applied to the system. But 
the compound is more tedious in its medicinal action ; more than 
this, it has sometimes completely failed, for instance in nervous 
affections, where the employment of iodine has been attempted 
with eminent success.” 
“All things considered, we are, perhaps, warranted in con- 
cluding that, in many of its most important characters, the action 
of hydriodate of potash bears a strong analogy to that of iodine.” 
In respect to the other compounds of iodine enumerated in 
the work before us, viz. the iodides of sulphur, of carbon, of iron, 
of lead, of zinc, of mercury, Mr. Cogswell observes, that the 
iodide of sulphur, there seems no ground for supposing, “differs 
from simple iodine in its peculiar effects upon the human eco- 
nomy ;” — that the iodides of carbon, so far as examined, have an 
action peculiar to themselves ;” — that in those metallic iodides 
which were submitted to examination, the preponderance of 
power is on the side of the bases. Mr. Lord, V.S., Doncaster, 
has used in the form of ointment the biniodide or deuto-ioduret 
of mercury, with very promising success ; Mr. Surnek, of Here- 
ford, has likewise given it a trial ; and to these respectable autho- 
rities the writer of this can satisfactorily add his own : all the 
evidence tending to shew that this medicine is likely to prove — 
externally, if not internally — a highly valuable remedy in the hands 
of the scientific veterinarian. Even in the proportion of half a 
