94 
Psyche 
[December 
occipital border and the lowermost part of the ventral surface of 
the labium. A convenient width (at the widest place) is 75 mm. 
The mandible is also drawn in anterior view. The plane of pro- 
jection passes through the apex, the inner (= medial) condyle and 
the outer ( = lateral) condyle. If the mandible is drawn from a 
head mounted for full-face view, it is usually necessary to prop up 
an edge of the slide to bring these three points into the same horizon- 
tal plane. A convenient length for the mandible drawing is 65 mm. 
