The
following
results establish its occurrence,
but also indicate
a
greater
extent of freedom
from it than is
enjoyed by Europeans, among of of whom 476 per cent, were 18,000 upwards found to be affected to some extent, and 3*5 per cent,
markedly. Abstract
of observations
made up to date.
Natives Colour examined, blind.
Per cent.
I. Al. Gaz. 1880 of the Allahabad Med. Soc. '82 Now collected by myself
8S0
26
3,192
56
2*9 1*4
Total...
4.372
72
i'6
McReddie
...
Cullen?Proceedings
...
...
...
300
Of the 3,192 observations now recorded I personally made 842, for the remainder I am indebted to the several are
mentioned in the
gentlemen whose names accompanying statement.
"
Holmgren's colored worsted method employed in every cases. Observer.
Surg. H. Hill
R. Macrae T. Lewtas ,, A. Tomes ,, Do. R. Cobb ? I). Basu ,, Do. Asst.-Surgeon Kherode Ch. Chowdhry ,,
Place.
Purulia
Julpigori Backergunge Midnapore Do.
Hazaribagh Faridpur Do.
Alipore
Total
11tJt
SOME FURTHER NOTES
ON COLOUR
BLINDNESS IN INDIA. By Surgeon A. Civil Dr.
Tomes,
Surgeon, Midnapore.
Macgowan
was
led to doubt the exist-
of the defect among the natives of this country, in consequence of certain observations
ence
made
by
him with
and Indo-China
negative
(Lancet,
results in
Vol. I.
1882,
p.
Japan 76).
June 1883.
test"
Class.
Prisoners Do. Do. Do. Police Prisoners Do.
Schoolboys j Prisoners
was
the
No. No. exacolor mined. blind.
164
None.
127 304
None.
760 82
2
14 3
438
1
184
5
110
2
1,023
29
3,192
56