LEGUMINOS £. 503 
_ .and is seen in commerce as a rough powder, orin small irregular 
2 pieces, originally of a light yellow colour, but usually dark- 
ened by exposure to light and moisture to a dull-ochrey, pale- 
brown, or even umber-brown or dark-purple colour. It has a 
4 bitter taste. (Cf. Pharm. Journ. (3), X., 814.) 
Respecting the medicinal uses of Goa Powder, Sir J. Fayrer 
_ Temarks :—‘‘ Huropeans when in India, and occasionally after 
_ their return to Europe, are liable to certain troublesome erup- 
tions on the skin of the trunk and extremities, which 
becoming chronic, are not only the source of considerable 
“annoyance, but often somewhat tedious in yielding to treat- 
ment. a 
“ One variety of the eruptions I refer to—commonly described 
8 ringworm—assumes the form of reddish slightly raised 
spots, which rapidly spread as rings, encircling patches of 
sound skin, varying in size from a split-pea to that of a 
ing, or even larger, with a slightly furfuraceous desqua- 
tion, and giving rise to much irritation and itching. They 
metimes remain few and far between, but are apt to spread 
over all parts of the body or limbs. 
3 er to herpes or tinea circinatus, 
to a combination of both of these; - 
ous herpes becoming a con- 
development of the trichophy- 
“This eruption is due eith 
but probably, in many cases, 
the initiatory patch of furfurace 
genial nidus for the subsequent 
© Such, I would suggest, is the pathology. of the eruption 
generally seen and spoken. of as ringworm in India, though it 
probable that other forms of eruptions, such as lichen cir- 
cumscriptus, erythema, and psoriasis guttata, are at times ‘ 
_ included under the same designation. Another form of erup= 
tion to which I would allude is probably rather to be referred 
chloasma. It affects the groins, the inner sides of the 
thighs, and those delicate surfaces of the integument that ped : 
rone to be the seat of moisture as well as other parts of the 
tegument. It generally makes its appearance, . 
oub 
troublesome, during the hot and damp seasons. It is also 
and is most 
