(All Rights reserved) 
BIOMETRIKA. Vol. XIII, Part IV 
CONTENTS 
PAGK 
I. On Random Occurrences in Space and Time, when followed by a closed 
Interval. By G. Mobant, B.Sc. (With six Diagrams in Text) . . 309 
II. Was the Skull of the Moriori artificially deformed ] By Kael Peaeson, 
F.B.S. (With one Plate) 338 
III. A New White-lock Family (Barton's Case). By Karl Pearson, F.II.S. 
(With two Plates) .347 
IV. On the Sesamoids of the Knee-Joint. Part II. Evolution of the Sesamoids. 
By Kabl Pearson, F.R.S. and Adelaide G. Davin, B.Sc (With 
nineteen Plates and one Folding Chart) . . . . . . 350 
V. The Incomplete Moments of a Normal Solid. By A. Ritchie-Scott, D. Sc. 401 
Miscellanea : 
Table of Ordinates of the Normal Curve for each permille of Frequency. 
Editorial . . . ^. . . . . . . . .426 
The publication of a paper in Biometnka marks that in the Editor's opinion it contains either in 
method or material something of interest to biometricians. But the Editor desires it to be distinctly 
understood that such publication does not mark assent to the arguments used or to the conclusions 
drawn in the paper. 
Biofnetrika appears about four times a year. A volume containing about 400 pages, with plates and 
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