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HINTS TO TRAVELLERS. 
If the urine is acid and scalding give twenty grains three times a 
day. Bicarbonate of soda is given in cases of blackwater fever when the 
urine is not sufficient in quantity; in such cases at least twenty grains 
• should be given every six hours. 
Soda salicylate .—Dose, ten to twenty grains. Relieves pain in rheumatic 
fever. Lowers temperature. Its action must be carefully watched, as too 
large doses may canse headache, buzzing in the ears, and even delirium. 
Sulphur .—Precipitated sulphur is useful in diphtheria; an ointment 
containing one part of sulphur to nine of lard, grease, or vaseline, makes 
a useful application for itch and other skin diseases. 
Tannin. —Dose, two and a half to five grains or more. Of course, 
tannin, like other drugs, can be given in the tabloid form (each tabloid 
contains two and a half grains), but it will act more quickly if it is 
mixed with water before administration. 
Tannin is a powerful astringent, and may be used internally or 
externally. 
In five to ten grain doses it helps to stop diarrhoea, bleeding from 
stomach, bowel, piles, and bladder. If there is continued bleeding- 
increase the dose to twenty grains, and repeat it as often as necessary. 
In cases of diarrhoea, tannin is usually given with some preparation of 
opium ; such as ten drops of clilorodyne or laudanum. 
Tannin may be dusted on sores to dry up and stop the discharge by 
its astringent action. Applied freely to bleeding sores or cuts, it will 
help to stop the haemorrhage. 
A solution of five grains to the ounce of warm water is useful as an 
astringent gargle for sore or relaxed throats, or as a wash for bleeding- 
gums and ulcers of mouth. 
Urotropin. —Dose, five to ten grains. May be given to disinfect the 
urine in cases of typhoid, cystitis, and gonorrhoea. 
Warburg’s tincture .—One tabloid is equal to thirty drops of the 
ordinary tincture. 
To produce sweating, first open the bowels, then give four to eight 
of the tabloids with a little hot spirit and water. If necessary, repeat 
the dose in three hours, and in either case withhold if possible food or 
drink till after this period has elapsed, but if the patient is very thirsty 
give hot drinks of weak tea or spirit and water. Keep Ir’m covered up 
and put a hot-water bottle in the bed. 
