6

12. In the British army returns no distinction is made be-
tween primary and re-vaccinations ; I shall consider them all
primary.

Primary vac-
cinations.

13. The total number of persons primarily vaccinated was
690,639, being an increase of
18,822 over the year 1874-75.
Table No. V. shows the number
by each establishment. It
could hardly be expected that
the increase in primary vacci-
nations would be great, seeing
it was estimated in last report
that they had amounted to
eight-tenths of the available children in the year 1874-75. Future
extension must now be very slow and gradual.

Excess of
operations
over the
number of
persons vac-
cinated.

14. There were 4,699 operations more than persons; that is to
say, so many secondary operations were performed on persons who
had been unsuccessfully vaccinated. I wish more of the 20,351 un-
successful cases had been operated on a second time, but I know
that many mothers object to a second operation immediately after
a failure.

Re-vaccina-
tions.

15. The total number of persons re-vaccinated was 117,714,
or 56,907 more than in the
preceding year. In this table
is shown the number in each
circle. There is a large
increase in the Sind and
Presidency circles, and con-
siderable progress in the
Southern, Central, and Gu-
zerat circles. Re-vaccination
is making quite as much pro-
gress as can be expected.
While there is a great increase
in Sind in respect to re-vac-
cinations, there is a consider-
able decrease in primary vaccinations, due, Dr. Williams says, to
want of subjects and much attention having been given to re-
vaccination. There were 960 operations more than persons ; that
is to say, so many persons were operated on more than once. In
the two talukas of Badin and Bago Tando, in Hyderabad Zillah,
there were 12,001 persons re-vaccinated, or 120 per mille of
population. Dr. Williams says :—" The more or less constant
" presence of small-pox in these two talukas throughout the year
" accounts for the large amount of work done. * * * But I
" think they (the two taluka vaccinators) re-vaccinated a consider-
"able number, quite unnecessarily, of children under 10 years of
" age." This is a difficult point to settle. In presence of small-pox I
would not discourage a parent from re-vaccinating his child at any
age, provided the primary vaccination had taken place at least