256 



MEMOIRS NATIONAL ACADEMY OF SCIENCES. 



Test 6 



[Vol. XV, 



W*MUa^3n£loK 



8 



MX- 4L.(i.S~M. 



*L* 



U4 \v***J8 St., 



17 



18 



Fig. 53.— Group Examination Beta, Form O, Test 6, Picture Completion. 



