ANATOMY OF THE ELEPHANT'S EAR. 
I I 
cise point) has its extremities, so far as shown in the illus- 
tration, at the points marked a and b on the margins. 
From c on the upper margin the suture separating the 
squamosal (or the tympanic?) from the periotic runs diag- 
onally downwards and to the left until it meets the former. 
The chief object that I desired to attain by the presenta- 
tion of Fig. 2 was a demonstration of the course, calibre, 
and direction of the Fallopian canal. This demonstration 
the picture gives fairly well. All the structures repre- 
sented are shown somewhat larger than their natural 
size, being magnified about 20 per cent. ; the view is 
taken looking directly toward the median line, i. e., from 
without inwards ; the top and bottom of the picture show 
respectively the top and bottom of the specimen ; and 
the frontal aspect of the specimen is that seen toward the 
right of the observer. In preparing the specimen for this 
demonstration of the Fallopian canal two planes of section 
were followed, the upper one vertical and antero-posterior, 
the lower one also antero-posterior but meeting the upper 
plane at an angle of about 150 degrees, and passing 
obliquely downwards and somewhat outwards, i. e., tow- 
ards the spectator, in the illustration ; the upper section 
was begun from the canal and was made by inserting the 
fine saw blade through the canal and cutting thence tow- 
ard the surface of the bone. The lower section, if I 
recollect aright, was made from the surface towards the 
canal. 1 It was this lower section which obliquely cut 
L If any reader of this article desires to know the direction pursued by 
these two planes of section with relation to the outer surface of the skull 
let him again refer to Fig. i, representing this surface. When these 
sections were made there had already been removed from the specimen 
one large upper fragment and three smaller lower fragments, all four 
of which are shown, held in their original positions by wires, in this 
figure. The central portion alone of the specimen, the one containing 
the auditory canal, the tympanohyal, the Fallopian canal, and most 
of the mastoid prominence, together with the important structures of the 
middle and internal ear not shown in this view, was the portion operated 
