GARSON : HUMAN REMAINS FOUND AT HOWE HILL, DUGGLEBY. 229 
The tallest individual was that to whom the skeleton D belonged. 
His stature estimated from the femur and tibia is 1 m. 927, from the 
femur alone 1 m. 874, and from the tibia 1 m. 905, or 75*9, 73 '8, 
and 75 inches respectively. It is fortunate that I am able to place 
before you the right femur of this skeleton and to demonstrate its 
length to you as 508 mm., otherwise you might think that there was 
some mistake regarding its measurement, on account of its being so 
unusually long. The two shortest skeletons are those marked C and 
L, each of which have an estimated stature from the femur and tibia 
of 1 m. 555, or 61*2 inches. From these figures it will be seen that 
there is a considerable degree of variation in this small series. The 
occurrence of D measuring 9 inches more than the tallest of the 
other six, without there being any skeleton correspondingly short, 
gives an erroneous idea of the average stature of the series. I have, 
therefore, had resource to Mr. Galton's method of arranging the 
different specimens according to their centesimal grades, by which 
means we get rid of the disturbing effects of the extremes at each 
end of the series, and so obtain the mean of the group. When treated 
in this way the actual mean stature of the series is 1 m. 628 (64 '1 
inches). For the information of those who are unacquainted with 
this method of dealing with statistics, I may state that at the 25th 
centesimal grade the stature is 1 m. 564 (61 '6 inches), the 50th, 1 m. 
616, and at the 75th, 1 m. 692 (66 6 inches) ; the value of Q, there- 
fore, is 64 mm., giving a corrected mean for the series of 1 m. 628. 
This height indicates as nearly as possible, I consider, the mean 
stature of the persons represented by the skeletons we have to deal 
with. It is considerably lower than the mean stature of the male 
population of this country at the present time, which, at prime of life 
between the ages of 23 and 51, is 1 m. 715 (67 '5 inches), according 
to the extensive observations of the Anthropometric Committee 
of the British Association* (See Reports for 1882). The tibio- 
femoral index, which shows the relative length of the tibia to that 
of the femur, varies from 777 in G and M to 87 '4 in D, and averages 
in the whole series 81*1, but excluding D, in which the index is very 
* When these observations, as tabulated, are treated by Mr. Galton's 
method of centesimal grades, the corrected mean stature is 1 m. 703 (67 inches). 
