434 Dr. W: L. Balls and Mr. H. A. Hancock. 



mms. 1 2 3 4 5 S 



) ////S^ XX XXX \ \ W>g^<^ N ^^-^x ^^^1 



Fig. 10 — a to /. — Each pair of drawings represents one piece of hair and shows : — 

 above — the position of the convolutions with slanting lines drawn to indicate the 

 direction at each turn : below — direction of slope of pit spirals, as determined at 

 various points after pressing. Length corrected to original value. Exceptionally 

 discrepant pieces have been selected for reproduction. 



our conclusions already drawn from microscopic work, and thus increases 

 their probability. 



