46 CHARLES B. DAVENPORT 



of porion from the floor, subtracted from vertex height should check very 

 closely with ear-head height. The horizontal distance of the glabella 

 from the occiput in contact with a vertical wall should approximate the 

 maximum head length. Foot length may be measured directly with cali- 

 pers and also upon an outline traced upon a paper on which the subject is 

 standing. An ingenious person will think of various ways in which ap- 

 proximately the same dimension can be measured, and by a little experience 

 can work out the difference that has to be applied to the slightly differing 

 dimensions in order to make them comparable. Thru such repeated and 

 diverse measurements of the same organ one at last acquires a sense of 

 reliability or unreliability of the measurement as finally accepted. It is to 

 be hoped that the day may come when to each individual measurement of a 

 living body may be attached its probable error; a method which has been 

 found so useful in connection with means in statistics in general. 



