238 
HINTS TO TRAVELLERS. 
similar to those of chlorodyne. Laudanum has been put up in the form 
of a tabloid, and is very convenient for transport. 
Dover's powder , or compound ipecacuanha powder .—Dose, five to fifteen 
grains. It contains opium and a small amount of ipecacuanha. Ten 
grains of Dover’s powder are equal to about fifteen drops of chlorodyne 
or laudanum. The tabloid is an extremely handy preparation. Dover’s 
powder is especially useful in coughs and colds, the ipecacuanha it con¬ 
tains assisting the action of the opium. If a patient who is chilled is 
put to bed at once, kept warm with blankets and hot-water bottles, and 
is given ten or fifteen grains with a hot drink, he will perspire, and 
probably the cold will be cut short. 
Peppermint , spirits of. —Dose, five to twenty drops. Is a valuable 
drug in cases of flatulence and dyspepsia, especially if combined with 
bicarbonate of soda; it also masks the taste of unpleasant medicines. 
For children, one drop of the spirit and one grain of bicarbonate of 
soda may be added to one teaspoonful of water, and this dose may be 
frequently repeated. 
Phenacetin .—Dose, three to eight grains. Phenacetin is used for 
headaches or for reducing the temperature in malaria and other febrile 
diseases, and to cause sweating. As it is very insoluble, it is best taken 
in the form of a powder, or in alcohol and hot water. 
Potassium , bromide of. See Bromides. 
* Potassium permanganate in solid form is a mild caustic, and is the 
active principle of Condy’s fluid, which contains about e : ght grains of 
the drug in one ounce. 
It is disinfectant, deodorant, and antiseptic. 
One part of this drug is soluble in about twenty parts of water. 
One grain gives a purple colour to a gallon of water. Impure water 
turns the purple rapidly to a brown colour, therefore the permanganate 
is a rough test for the presence of organic matter in water. 
A pale purple solution is useful as a gargle or mouth wash, also 
as an injection in gonorrhoea; wounds maybe cleansed with a s ; milar 
solution. 
It is especially useful in poisoned wounds, such as snake-bites, and 
should in these cases be injected hypodermically (p. 244). 
Is an antidote to poisoning by opium (p. 225). 
