1923. No. 4. PHYSICAL DEVELOPMENT OF CHILDREN AND YOUNG PEOPLE. 9 



growth — that would be only unnecessary repetitions of the works of 

 Others and my own — it is a study of the physical development of children 

 in the Capital of Norway. Some comparisons will be done, specially with 

 other Norwegian investigations. On table i e and curve fig. 2 is seen a 

 comparison between the material of our Christiania public schools and 

 the results of an investigation by the author in the districts of Mjösen 

 1913 — 14; one from Horten 1916 (Zeiner-Henriksen) and one 

 from Stavanger 19 18 (the statistical bureau of the city, chief Lie, 

 miss Gudrun Dahl). The comparison — which refers to boys onlv — 

 does not show any onesided preferance for any single material continued 

 through all the year classes. The districts of Mjösen have on the whole 



comparatively the lowest number-values. Whether it plays any part that 

 this is a mixed country and city material, while the other three curves 

 only refer to cities, shall not be said. It will be noted that the abscissa 

 here also has divisions for the half-year ages (7^2. 8%. &c.). The fact 

 is that the investigations with which our present material is being com- 

 pared, state the values for the individuals who have filled 7, 8, &c., 

 therefore the average age will be 7^, 8^. This must be taken into con- 

 sideration when the curves are constructed, as the numbers of our material 

 only can be put down between the 7.0. 8.0. &:c. of the abscissa, the rest 

 between 7%. 8%. 9%. 



It is naturally of great interest to make direct comparisons between 

 the public schools and the higher schools. — although there beforehand 

 can be no doubt that there is a difference in favour of the last. 



On table 2 is seen a comparison between i ) Frogner and \estheim 

 higher schools with pupils from more well to do homes. 2) Borgerskolen 

 and Hammersborg, also higher schools, but — as a later following com- 

 parison of weights will show — representing the least good material of 



