252 



MEMOIRS NATIONAL ACADEMY OF SCIENCES. 



Test 2 



[Vol. ST. 



ZI 



/ 



/ 



/ 



~ZL 



n 



15 



IJ 



IS 



'Zl 



V 



S / 2 / A 



7- 



z 



7-7-7 



7=± 



v 



/ 



/ 



v 



/ 



I 



/ 



/? 



4-0 



10 



rrt 



13 



ZO 



%t 



50 



Fig. 49 — Group Examination Beta, Form O, Test 2, Cube Analysis. 



