more or less through the first two years off and on. It will be found 
a very difficult thing to get a peasant to understand or act up to this, 
which in most cases will be only a counsel of perfection. When it 
conies to the tertiaries and potassium iodide, the patients readily 
leamfrom the relief obtained to value the drug. In St. Kitts and in 
Fiji the natives are fully alive to the uses of iodide, and prescribe it 
for themselves freely. 
1 have noticed doses as high as ninety minims of liq.. hydrag. 
perch, mentioned in some of the literature on yaws, and there is very 
frequent reference to salivation. I wish to draw attention to the fact 
that negroes bear mercury badly. My father, a keen syphilist with 
many years’ experience of treating negroes in hospital, where one can 
see best what one is doing, warned me of this. Fifteen minims three 
times a day is, I believe, about, his limit. My own experience has 
amply borne out this. Though one is not afraid of “ touching the 
gums of a patient, and, in fact, generally likes to see them just 
"touched,” as an indication that mercury is being pushed to its limit, 
yet salivation is undesirable. Apart from any physical effect it may 
have on the health or strength of the patient, it is apt to shake his 
confidence, and perhaps frighten him away altogether. It is 
astonishing how quickly some blacks do become salivated. I have 
seen a woman very badly ptyalised by five grains of calomel. Blue 
ointment applied to a wrist for a few days salivated a man, and a 
young woman became salivated before she had finished using half an 
ounce of blue ointment by daily inunction of about one dram. In 
he last case, there was certainly no idiosyncrasy ; she had taken 
mercury, by the mouth in small doses, freely before, and has since 
received a course of intramuscular injection of 003 gme of 
salalembroth weekly, equivalent to about 'i gr. of corrosi\e 
sublimate. 
1 have used mercury by inunction of blue ointment, mouth 
administration of liq. hydrarg. perch., calomel, and grey powder, and 
intramuscular injections of salalembroth. After a fairly large 
ex Perience, I am confident that mercury is borne best when given by 
tne last method Inunction may salivate quickly and suddenly. In 
hospital one can watch it, but even so the ptyalism may 7 occur 
suddenly. Grey powder with carbonate of iron is an excellent 
tre atment, especially for children with hereditary taint or yaws. It 
