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ACID NITRATE OF SILVER. 
duration, according to the state of the diseased part and the 
sensitiveness of the individual. There has, however, never 
been any general inconvenience. On removing the covering 
the healthy skin will be found to have become brown, and the 
diseased portions paler coloured than before. On ulcerated 
surfaces, no trace of iodine will be detected two hours after 
its application. Sometimes the action has been sufficiently 
powerful to produce phtyctena. 
The results of Dr. Richter’s experiments are, that this 
solution acts as a caustic; that it has a really heroic action in 
cases of lupus; that its efficacy is remarkable in non-vascular 
goitre and scrofulous ulcers, doubtful in eczema, and nil in 
psoriasis. 
GLYCERINE A PRESERVATIVE OE MORBID PARTS. 
It is well known that alcoholic and most other solutions 
resorted to for the preservation of morbid specimens both 
destroy their colour and render them hard. Now, since 
glycerine has been found to preserve the colour of natural 
objects, and also their flexibility, it would seem to be an 
admirable fluid for keeping morbid parts in, much of their 
w r orth being referable to the change of colour, &c., produced 
by disease. 
MEDICINAL MILK. 
M. Labourdette has instituted a series of experiments, by 
which he proves that, with the exercise of due precautions, 
cows might be made to take various substances, as lead, 
iodine, &c., with which their milk would become charged, 
and the mammary secretion may be then given to children, 
or persons of irritable stomachs. 
THE ACID NITRATE OE SILVER. 
M. Crocq lately read a paper before the Medical Society 
of Brussels, wherein he sets forth the advantages of a 
caustic solution hitherto not much employed — namely, 
the acid nitrate of silver. The author states that it should 
be used w x hen the surface acted upon is to be more or 
less deeply modified, without an intention of destroying 
