470 MR EGBERT WORTHINGTON. 



investigation of the problems indicated in the title, the authors 

 have dealt with (1) the French measurements of Eollet from 

 the dissecting-room at Lyons, (2) the Aino bones recorded by 

 Koganei, The French measurements comprise the lengths of 

 humerus, radius, ulna, femur, tibia, and fibula. The sex is also 

 recorded. The Aino are not quite so numerous, but include, in 

 addition, measurements of the clavicle, the radius and tibia from 

 centre to centre, the length of the head and neck of the femur, 

 and the scapular index. 



The standard deviations, coefficients of variation, and coeffi- 

 cients of correlation are calculated according to the formulae 

 given in the previous memoir on " Eegression, Heredity, and 

 Panmixia." The probable error is calculated in each case. The 

 sexual ratios and the racial ratios (French to Aino) for the 

 means, variations, and correlations are also tabulated for each 

 bone. 



The chief facts which the authors arrive at from a considera- 

 tion of the tables are, briefly, as follows : — 



(1) With regard to sexual ratios : man tends to gain in size on 



woman ; but woman tends to gain in variability and in 

 correlation on man. This is confirmed by Mr Warren's 

 Libyan measurements. 



(2) With regard to racial ratios : both male and female are 



larger in the civilised than in the uncivilised race. In 

 both male and female variation has progressed — except 

 in the femaje tibia and the male ulna — as we pass 

 from the uncivilised to the civilised condition. Correla- 

 tion has remained much the same in tlie male, but has 

 progressed in the female. 



" On the I/iheritance of the Cejihalic Index " (Miss Cicely D. 

 Fawcett and Karl Pearson). — The material dealt with is a series 

 of measurements on North American Indians of mixed blood. 

 The coefficients of heredity of the cephalic index are tabulated 

 for parental and fraternal relationships. They are compared 

 with those of stature for the English middle classes, and with 

 the theoretical values according to Galton's law of ancestral 

 heredity. The results are found to be, with slight modifications, 

 confirmatory of that law. 



