A SECOND STUDY OF THE VAKIATION AND COKEE- 
LATION OF THE HUMAN SKULL, WITH SPECIAL 
KEFEKENCE TO THE NAQADA CKANIA.* 
By cicely D. FAWCETT, B.Sc, assisted by ALICE LEE, D.Sc, and others, 
University College, London^. 
CONTENTS. 
Page 
(1) Introductory and Historical 408 
(2) The Material 410 
(3) Brief Account of the Naqada Race 412 
(4) Measurements made and Methods of Measurement. ...... 412 
(5) On the Determination of Capacity .......... 419 
(6) On the Degree of Homogeneity possessed by the Naqada Crania .... 422 
(7) Mean Values of the Cranial Characters of the Naqada Race and their Comparison 
with those of allied and other Races ......... 424 
(8) General Points as to Results and Methods of Measuring 436 
(9) On the Numerical, Analytical, and Graphical Representation of Variability in the 
Naqada Race 437 
(10) On the Correlation of the Cranial Characters 454 
(11) Summary of Conclusions ............ 464 
(12) Appendix of Naqada Cranial Measurements ........ 466 
(1) Introductory and Historical. 
The present investigation was commenced in 1895, but the long series of 
measurements involved and the elaborate numerical calculations necessary, have 
delayed tlie completion of the work until the present time. It forms part of a more 
general scheme for determining the size, variability and correlation of the chief 
organs and characters in man, which has been in progress at University College for 
* The Editors of Biometrika have been assisted in publishing this memoir in its present form by the 
allotment by the President and Council of the Royal Society of a grant for this purpose from their 
Publication Grant Fund. 
t I am responsible for the editing and arrangement of Miss Fawcett's material. The present memoir 
is to some extent a pi-oduct of cooperation among the biometric workers at University College. On 
Miss Fawcett, however, by far the most arduous part of the task has fallen. K. P. 
