riiotiuiruphie ReHearchcs ami Portraiture 



327 



Two of these five stundurd [)oiiit8, luision F and po^onion C, are used to get 

 ail alwoluto l)a.se. C7'' ih taken vertical, treated lus axis of //, and made 50 

 its in leiij^tli, the unit l)ein^ with (Jaltoii a millimetre; no fmctions l)eing 

 _ ven. The axis C'A' of j" is taken per|Mnidicular to CF, and the coordinates 

 of iV, .1/ and ii' re(|uiro two donhle-figure numbers each for ijlottinj;. Thus 

 far we have reached a lexicon in which naso-pof^onial lenj^tli and the coor- 

 dinates of rhinion, hyixTcheilon and syncheilion wouUl enable us to identify 

 a profile — the errors of measurement lieing as Galton says small as comparetl 

 to the variations due to individuality. 



Galton now proceeds to tiie specification by nine types of ejich (ten in the 

 case of the nose) of the seven parts of the |)rofile from nasion to pogonifni. 

 These are (i) shape of nasion and slope of brow to l)e super[)0»Bd at F, 



(i) 



(ii) 



(■") _ 



(iv) 



(V) 



(vi) 



(vii) 



Dot V 



Dol-N 



I>oi = .U 



Dot = 5 



Diagram ix. 

 The (lots represmt the position of standarci points. 



(ii) nose from nasion to rhinion, (ili) luxstril from rhinion to hypercheilon, 

 (iv) upper lip from hypercheilon to lip-parting, (v) nature of the lip-parting 

 with reference to syncheilion .us origin, (vi) size of upper and lower lips respec- 

 tively, (vii) outline of chin between border of lower lip and pogonion. 



The type of each portion is here given by a single number. We have 



