430 CHAMBERLAIN. 



to the sun. These individuals are considered in what we will term the "Scout- 

 Constabulary-Police-Group." 



Class IV. An examination of all patients invalided home from the Division 

 Hospital in Manila during a period of one and one-half years and a deter- 

 mination of the complexion type of each. There were 273 of these men. 



Class V. An examination of 10,072 enlisted men of the United States Army 

 to detennine the relative proportions of the blond, brunette, and mixed types. 

 The rate per 1,000 was found to be, blonds 238, brunettes 206, mixed types 55G. 

 This information was used as a basis for comparison with the rates per 1,000 

 of the three types in Classes III and IV, the former consisting of men who had 

 voluntarily endured the climate for an average of 5.-5 years and the latter of men 

 who had succumbed to its influences during their tour of military service. 



Class VI. A series of cases of sunstroke and heat exhaustion occurring in the 

 United States and in which the type of complexion of the patient was recorded." 



In Class II, the choice of the blonds and brunettes for observation was 

 made by the medical officers referred to in footnote 5, and the selected 

 men were subsequently all examined by the writer, and those who did 

 not conform to the standard types were excluded. In Class I, selection 

 was made by choosing from the cards of a group of 800 men, who had 

 been under observation for two years, those on which the 3 recorded 

 complexion factors indicated well marked blondness or a clearly defined 

 brunette type. Throughout this report the blond group includes men 

 with blue or gray eyes, light brown, red, flaxen, or sandy hair, and fair, 

 ruddy, or light complexion, while the brunette group is made up of 

 those with brown or black eyes, dark brown or black hair, and medium 

 or dark complexions. Men in whom one of the complexion factors cor- 

 responded to a certain type and the other two belonged to the opposite 

 type were classed as "mixed," and were excluded from the observations 

 dealt with in Part II.'^ 



Each of the officers referred to in footnotes 3 and 5 had under ob- 



° These statistics were collected through the kindness of the authorities at the 

 following hospitals, to whom we wish to express our appreciation of the courtesies 

 extended to us : Philadelphia General Hospital ; Roosevelt Hospital, New York, 

 Bellevue Hospital, New York; Massachusetts General Hospital, Boston; Pres- 

 byterian Hospital, New York; Boston City Hospital; Carney Hospital, Boston; 

 St. Luke's Hospital, Chicago; Mercy Hospital, Baltimore; Jefferson Hospital, 

 Philadelphia; New Haven Hospital; Alexian Brothers' Hospital, Chicago; Cook 

 County Hospital, Chicago ; St. Louis City Hospital ; Rhode Island Hospital, 

 Providence. We also received reports from a few other institutions, but as they 

 came in our franked envelopes without address we are unable to credit them to 

 the sender. 



' With such a classification there will be a very well marked average difference 

 in complexion type between the blond group and the brunette group. However, 

 it must not be thought that all of the blonds were conspicuous examples of 

 blondness. A man with dark blue eyes, light brown hair, and a fair skin would 

 fall in the blond class and, while not a conspicuous blond, would still be sharply 

 contrasted with the man of dark brown eyes, black hair, and swarthy complexion. 



