NO. lO HUMAN HAIR AND PRIMATK PATTERNrXG MILLER 7 



shown to have the same tendency to follow the main lines of primate 

 pattern making. 



When gray hairs begin to replace the pigmented ones they do not 

 appear uniformly all over the body. " A vigorous man just beginning 

 to show a touch of gray on the temples " is an often-heard phrase that 

 unconsciously recognizes this fact. When beards were common among 

 us everyone knew how usual it was for them to turn gray before 

 the scalp. 



As they increase in numbers the gray hairs tend to form patterns. 

 These are sometimes nothing more than faint sketches or suggestions. 

 Often, however, they develop into striking color contrasts. The 

 faint and fugitive human patterns are not always easy to correlate 

 with the patterns of other primates, but the definite ones rarely pre- 

 sent any such difificulty. 



Eight of these well defined human color patterns with their ]~)rimate 

 homologues are shown on Plates 4 and 5. 



The first and second (pi. 4. figs, i and 3). consisting of a white 

 beard contrasted with a dark crown, are frequently seen. In the first 

 the mouth area is white. In the second it is dark. Both occur in 

 many species of monkey, two of which, the African Erythrocchus 

 pyrrJionotus and Ccrcopitliccus Uwcstl, are shown in Figures 2 and 4. 

 The identity is so obvious that it requires no comment. 



The third pattern (pi. 4. fig. 5). consisting of a white chin beard 

 sharply contrasted with dark whiskers and head, is less common. 

 Sometimes the w^hite involves the moustache. It is then exactly the 

 same as the white area in the African monkey CcrcopitJiccus hrazzac 

 (pi. 4, fig. 6). I have seen several examples of this human pattern 

 with white moustache, I)Ut have not yet secured a photograph. 



The fourth pattern (pi. 4, figs. 7, 8, 9) is merely a dark mark on 

 the cheek margin of a gray beard accompanying a gray or bald liead. 

 Insignificant though this marking may seem, it is surprisingly com- 

 mon. On April 21, 1930, I visited the Jewish pushcart market district 

 in New York City, one of the few convenient places where many 

 full beards can now be seen, to look for this mark. I found it in no 

 less than 47 out of 55 men with gray or white beards. The same 

 dark line at the edge of the longer hair on the cheeks is found in 

 many of the monkeys that have a partly bare median facial area. An 

 example is shown in Plate 4, Figure 10, the Himalayan langur 

 (Pygafhrix scliisfacca). It may be easily observed in immature 

 Japanese macaques, animals that are often exhibited in zoological 

 gardens. 



