E. M. Elderton 
297 
were transferred to cards much later and the simpler method was employed, and 
30-75 was included in the 30 inch group and the centre of tliis group is 30'375. 
Through the kindness of Dr Priestley, School Medical Officer for Staffordshire, 
we have been able to obtain the regression of Weight on Height for certain 
age groups of boys and girls in that county. Staffordshire is a county of very 
various occupations and contains an agricultural as well as a mining and factory 
population. 
The children measured are " entrants " and " leavers " and a further group of 
children, namely those from 8 to 9 were measured. The "leavers" include 
children of 12 to 14 years, "since in general the only 'leavers' at age 12 to 13 
are rural, and the only 'leavers' at age 13 to 14 are urban*." 
The children were of the age stated, 5 and not yet 6, 8 and not yet 9, on 
January 1, 1911, but the actual day of weighing may have been any school day from 
January to December, so that a child entered as 8 may have been only a few days 
short of 10 when it was acttially measured, and therefore the mean age of the 
group of children of 8 to 9 will be 9 years. "In the case of the group of leavers, 13 
to 14, no child can have been more than 14, because on attaining that age the 
children are entitled to leave school, and generally do leave. With these the mean 
height and weight in our tables refer to the true mean of the years of the group, 
viz., 13 and a halff." We shall table to the middle of the group, namely at ages 6, 
9, 13 and 13^. 
The children were weighed and measured without shoes, but in ordinary indoor 
clothes. The figures were read to the nearest quarter of an inch and to the nearest 
quarter of a pound. 
Staffordshire Ch ildren. 
Ages 
Girls 
Boys 
Mean 
Height 
Mean 
Weight 
Kegression of 
Weight on 
Height 
Mean 
Height 
Mean 
Weight 
Regression of 
Weight on 
Height 
6 
9 
13 
41-9 
47-7 
56- 7 
57- 1 
39-8 
51-1 
78-0 
81-0 
1 -705 
2- 024 
3- 272 
3-360 
42-1 
48-1 
55- 8 
56- 3 
41-0 
53-0 
75-3 
77-7 
1- 741 
2- 120 
2- 811 
3- 166 
It will be as well to compare these means with those for all Glasgow ; so far we 
have not given them in this paper for all the schools taken together but only for 
each school group. 
* Staffordshire County Council, Annual Report of the School Medical Officer for the Yea.r 1911. 
J. and C. Mort, Ltd., 39, Gieengate Street, Stafford, 1912. 
t Ihid. p. 25. 
