28o 



The Journal of Heredity 



"Upon surveying the collected data, 

 one sees that in the v'cr>^ races which 

 doubtless are purebred, the width of 

 the face, in the middle hardly ever falls 

 below 147 mm. It is therefore almost 

 certain that where this measurement is 

 not reached, there is a mixture of for- 

 eign blood. 



This survey shows that especially the 

 Cherokees, Trokesen, Micimac, Dela- 

 ware, and Creek Indians are much 

 mixed, since their face-widths fall 

 below 143 mm — statements which may 

 only be made concerning crosses with 

 other races. 



In Figures 29, 30, and 31 are repre- 

 sentative facial types, originated by 

 race-mingling in different parts of the 

 world. The distinguishing quality of 

 them all is a comparatively long face, of 

 which especially the upper part is dis- 

 proportionally drawn out. 



The material is partly my own taken 

 from the collections of the Race- 

 biological Institution of Upsala, and 

 partly gathered from American and 

 German works. 



It will, no doubt, prove to be a very 

 interesting and significant task for 

 race-biological research to penetrate 

 deeper into these departments, and 

 not only to study special individuals, 

 but to investigate whole families and 

 tribes, and to make exact measure- 

 ments. In this way we shall, sooner or 

 later, arrive at real knowledge of the 

 innermost nature of such phenomena. 

 It has to be determined, what is of 



genotypical cause depending on the 

 type of the germ-plasm), and what role 

 environment plays. This is a depart- 

 ment of research which undoubtedly 

 promises significant conclusions. 



Haecker, in a newly-issued work,^ 

 energetically supports the significance 

 of research of this kind. One ought 

 to use all possible kinds of methods, 

 even evolutionary-historical ones. He 

 writes: "This new research work — 

 historically developed characteristic or 

 race analysis (Phanogentik) investi- 

 gates the origin of the outer character- 

 istics of the perfected organisms mor- 

 phologically and physiologically, and 

 seeks to trace their roots step by step 

 back over these active intermediate 

 processes into the earliest possible stage 

 of development. 



"The investigation presents itself 

 also as a specific chapter of mechanical 

 and physiological development, and its 

 object differs from the hitherto espe- 

 cially pursued aims of this science in 

 that the new investigation has to do 

 with a special method and race charac- 

 teristics and does not go forward from 

 the fertilized egg through the develop- 

 ing period but goes back from the 

 finished outer characteristic, a pro- 

 cedure which in some respects reminds 

 one of the methods of the prehistorian, 

 paleontologist, and geologist." 



Also Hammar^ of Uppsala has laid 

 stress upon the importance for race- 

 biology of embryological constitution 

 research. 



' V. Haecker, Entwicklungs geschichtliche Eigenschafts. analyse. (Phiinogenetilc.) Jena, 1918. 

 ^ J. A. Hammar, Ueber Konstitutionsforschung in der normalen Anatomie. Anat. Anz. 1916. 



An Outline of Mental Disorders 



Mental Disorders, briefly de- 

 scribed and classified. By Charles 

 B. Thompson, M. D., medical di- 

 rector of the Mental Hygiene So- 

 ciety of Maryland. Pp. 48, price 

 75 cts. Baltimore, Warwick and 

 York, 1920. 



Dr. Thompson's pamphlet offers 



an intelligent outline and description 

 of the Aarious "insanities," which 

 will be welcomed by interested laymen 

 who find the terminolog>' of this 

 subject confusing. Its plan appar- 

 ently did not include anything more 

 than occasional incidental reference to 

 heredity; and among "Means of Pre- 

 vention" eugenics is not listed. P. P. 



