MHMOIUS OF TIIH NATIONAL ACADEMY OF SCUiNCES. 

 Tablk XLll. — Siridlioii of :.'T anglfii of itlrioloKubiMsnl fn-ixjuuihiiim. — Salado. 



2.M 



Maxiiimm orscriation, 73. 



Table XLIII. — (h-diiwtion of 38 orbital indices. — Salado. 



Variation, 18.19. Theoretical mean of variation, 90.90. Skull nearest to mean, H. 51. Aver- 

 age, 91.10. 



Among The above skulls, H. 19, H. 26, H. 21, H. .^)7, U. 7, H. IS, H. 25, H. 12, H. 40, H. 15, 

 and H. 30, eleven in all, belonp; to apparently normal skull^s; their average index is 91.00. 



Table XLIV. — Seriation of 38 orbital indiccx. — Salado. 



Maximum of frequency, 94. 



