230 MEMOIRS OF THE CARNEGIE MUSEUM 
mal in life may often, and, in fact usually, when at rest, have held its head in a 
position analogous to that in which the head is held by the struthious birds, or, as 
an acquaintance well expressed it in conversation, in ‘“‘a cameloid position.” The 
attitude referred to is hinted at in a sketch made by Miss Alice B. Woodward, the 
accomplished daughter of Dr. Henry Woodward, F.R.S. This sketch was pub- 
lished by the London Weekly Graphic in its issue of May 18, 1905, and is herewith 
reproduced by permission of the editors of that publication. 
Further anatomical confirmation of the correctness of the position of the skull 
given in the restoration is afforded by the study of the inferior surfaces of the atlas 
and the axis when they are brought into apposition and articulated. It will then 
be observed that their under sides form a gently arching surface. ‘To attempt to 
bring the atlas and the axis into a position which would enable the longer axis of 
the skull to be placed in a direct line with the cervical vertebrae and to place these 
vertebree in a line with their inferior faces set absolutely horizontally involves the 
dislocation of the neck. 
Tue Bones oF THE SKULL. 
Fic. 3.—Side view of the skull of Diplodocus. 1, Occipital condyle ; 2, basioccipital process ; 3, end of left paroc- 
cipital process ; 4, tip of posterior process of supraoccipital ; 5, squamosal ; 6, parietal ; 7, postfrontal ; 8, postorbital ; 9, 
frontal ; 10, prefrontal ; 11, nasal ; 12, supraorbital ; 13, lachrymal ; 14, orbitosphenoid ; 15, alisphenoid ; 16, presphe- 
noid ; 17, quadrate ; 17’, hook-like lower end of quadrate; 18, quadratojugal ; 19, jugal; 20, maxillary ; 21, pre- 
orbital vacuity ; 22, mesial foramen ; 23, posterior processes of premaxillaries (according to Marsh) ; 24, premaxillaries ; 
25, supratemporal fossa ; 26, dentary ; 27, angular ; 28, surangular ; 29, articular ; 29’, process of articular overlapping 
surangular ; 30, foramen at posterior extremity of premaxillaries; 31, nasal opening (according to Marsh) ; 32, infra- 
temporal vacuity ; 33, orbital vacuity. (Figure one tenth natural size. ) 
The Basioccipital.—The basioccipital is terminated posteriorly by the occipital 
condyle, which, as has been pointed out by Professor Marsh, is “ hemispherical, 
