204 PROCEEDINGS OF THE ANATOMICAL AND ANTHROPOLOGICAL 



Class C, whereas the students in Class B hold an intermediate posi- 

 tion. Now, we find that the superior physical fitness of the more 

 intellectual class is like .their mental characteristics inherited from 

 their parents, and that they thus have a start given them in the race 

 of life from the very first, whereas those who are mentally unfit are 

 doubly handicapped by also being physically below "par". The facts 

 brought out by these statistics, therefore, I think, point to the im- 

 portance of a physical training of the body being adopted as a remedy 

 for the intellectually backward, and of the necessity of a due propor- 

 tion of muscular exercise in the open air for all engaged in mental 

 work. 



In conclusion, I have pleasure in acknowledging with thanks the 

 assistance which has been given me by many friends, and more 

 especially Professor Peter Thompson and Dr. G. J. Jenkins, of 

 King's College, London, and Mr. Freke Field, who has taken the 

 majority of the measurements recorded in the tables. 



My thanks are also especially due to Professor Stewart on behalf 

 of the Council of the Royal College of Surgeons, England, Professor 

 G. D. Thane and Professor Alexander Macalister for permission to 

 make use of the skulls in the museums at the College of Surgeons, 

 and University College, London, and the Anatomical Museum, Cam- 

 bridge, also to Professor R. W. Reid for the use of specimens from 

 the Anatomical Museum, Aberdeen, to help to illustrate my paper. 



BEFEKENCES TO LITERATURE. 

 Barratt, Wakelin. Jour. Anat. Physiol., vol. xxxvii., p. 150. 

 Blakeman, J. Biometrika, vol. iv., p. 145 et seq. 

 Cleland, J.Tfie Treatment of Spina Bifida, by J. Morton. 

 Davis, Barnard. Synostotic Crania, 1856. 

 Dodd, H. Worth. Lancet, 1903, p. 1665. 



Duckworth, W. L. H .Morphology ami Anthropology, 1904, p. 253 et seq. 

 Dwight, T. " The Closure of the Cranial Sutures, a Sign of Age." Boston Medical 



and Surgical Journal, vol. cxxii., 17, p. 389. 

 Flower, W. H.Ostcological Catalogue, R.C.S. England, p. 254. 

 Gladstone, R. J. Biometrika, vol. iv., 1905, p. 116, and Middlesex Hospital Archives, 



vol. i., p. 27. 



