12 mm. wide, and 12 mm. deep at the proximal end, and 10 mm. 
wide by 10 mm. deep at the distal end. 1 he ungual phalanx 
measures 43 nun. along its chord, 1 1 mm. wide proximally, and 
15 mm. d-eep upon its articular surfaces, or 18 mm. it made to 
include the process. 
Third Toe.—This toe consists of four joints, the first one 
being 31 mm. long, 15 nun. wide, and 12 mm. dee]) proximally. 
Distally it : s 9 mm. wide, and nearly 9 mm. deep. 1 be next 
bone is 16 mm. long, 10 mm. wide proximally, and 1 1 mm. deep, 
with a distal width of 9 mm. and a depth of 8 mm. 1 he suc¬ 
ceeding phalanx is 30 mm. long, 10 mm. wide, and 9 mm. deep 
proximally, and 8 mm. wide by 8 mm. deep distally. 1 he lingual 
phalanx measures 32 mm. along its chord, and at its articular 
end is 9 mm. wide and 9 nun. deep, or 12 mm. including the 
process. 
Fourth Toe.—The measurements and dispositions of the 
five bones composing the fourth toe are as follow:—1 he proxi¬ 
mal phalanx is 17 mm. long, 9 mm. wide, and 9 nun. dee]) proxi- 
mallv, and 8 nun. wide by 7 mm. deep distally. I he next phalanx 
is 8 mm. long, 8 nun. wide, and 7 nun. deep proximally, and dis¬ 
tall v 7 mm. wide and 6 nun. deep. The third phalanx is 9 nun. 
long, 8 mm. wide, and 7 mm. deep proximally. and 7 nun. by 
7 mm. distally. The fourth phalanx is 26 mm. long, 7 mm. wide, 
and 7 nun. deep proximally, and 6 mm. wide by 5 mm. dee]) 
distally. 
The ungual phalanx of the fourth toe measures 28 mm. 
along its chord, and is proximally 8 nun. wide by 8 mm. deep, 
or 12 mm., including the process. 
SYXSACRPM. 
The synsacrum has a total length of 128 mm., including the 
pubic bones, and 115 mm. without them. The greatest width 
across the gluteal regions is 61 mm. The pre-acetabular length, 
measured along the outer walls of the ilia, and not therefore 
taken in a central line, is 70 nun. to the anterior rim of either 
acetabulum. If the synsacrum is inverted upon the measuring 
board, so as to rest upon the ilio-neural ridge, the greatest eleva¬ 
tion of the pubic bones above the base board is 78 mm. Pos¬ 
teriorly the pubics curve inwardly, but do not quite meet one 
another bv a space of 8 mm. In the adult condition of a syn¬ 
sacrum such as this it is not easy to state with certainty the 
exact number of vertebrae that enter into its composition but 
apparently 14 or 15 are here involved. The gluteal ridges as 
they advance forward completely blend along the neuro-central 
line in the eagle, but in the vulture they retain their identity 
