GG THE TOXER LECTURES. 



The maxillary portiou is divided into the part over the infra- 

 orbital foramen and the part answering to the base of the ascending 

 process of the maxilla. 



The first of these divisions is exceedingly variable. The remains 

 of the suture at the roof of the infra-orbital foramen, usually ending 

 at the border, may extend to the malar.^ The entire sutural arc of 

 the orbital border may be depressed below the rest of the curve, 

 and a minute spicule on the median side appears to indicate that 

 fibrous tissue had bridged or occupied the interval caused by the 

 depression. 



Negroes frequently exhibit the .above-named variety. The 

 line of the suture over the foramen is often hyperostosed, so as 

 to assume a rounded form which may be irregularly roughened. 

 Such a variation is often found in large, heavy crania." The 

 ascending process of the maxilla entering into the composition of 

 the border may be sharply ridged and abruptly raised above the 

 planes of the floor of the orbit.'* 



In No. 151G, Malay, the infra-orbital suture does not extend to 

 the inferior border of the orbit, but reaches the malar bone. A 

 well-defined groove is seen on the inferior orbital border in 1450, 

 Australian; 44, Menominee; and 739, Mandan. 



In the same group, with the rugose suture over the infra-orbital 

 foramen, may be placed the rather decided ledge-like hyperostosis 

 which marks the maxilla directly above and in front of the palatal 

 as it lies over the spheno-palatine foramen. 



1 1316, Malay (A. N. S.), aged eight years. 



^ "Well illustrated in a slvull of Lenape (North American Indian), No. 40, 

 A. N. 8. 



^ The suture over the infra-orbital foramen is raised or rugose in many 

 examples of crania. In this connection see 1451, 1202, Australian ; 747, 

 Minitari ; 740, Mandan. The suture is often open. Examples are seen in 

 Nos. 1300, 1342, Sandwich Islanders; Nos. 69, 708, 707, 733, and 720, Semi- 

 nole; Nos. 951 and 955, Narragansett ; Nos. 1227, 745, 1233, B lack foot ; 

 1322, Pottawatomie; and 739, Mandan. 



