Marvels of the Untverse S15 
generally, at any rate, killed for themselves. But a glance at the teeth seems to show that they did 
not greatly concern themselves with their meat, but swallowed it whole, in great mouthfuls. This 
is probable, because all the teeth have the form of great pointed spikes, and none are modified for 
chewing, as are the great scissor-like cheek-teeth of lions and tigers. We may further safely assume 
that these cold-blooded hunters had no movable tongue ; and we know they had no lips. Thus they 
were not blood-drinkers. 
Looking at the photograph of the skeleton it will be noticed that the neck-vertebre, like those 
of the back, bore long ribs, which were probably freely movable. This is a common reptilian feature, 
but unusual among these giant reptiles. 
TSETSE-FLIES 
BY ERNEST E, AUSTEN. 
It has long been known that the bites of Tsetse flies are, or may be, fatal to horses, cattle, dogs 
and other domesticated animals. Scarce ten years have elapsed, however, since it was proved by 
the brilliant investigations of Surgeon-General Sir David Bruce and other naturalists, British and 
foreign, that the insects with which we are dealing are associated with and solely concerned in 
spreading the terrible human disease called Sleeping Sickness, which at the present time is the 
scourge of many parts of Tropical Africa, and, by restricting the supply of native labour, is even 
threatening the continued prosperity of commercial enterprises in the south of the continent. 
i 
Photo by) (A. J. Shepstone, 
THE SKULL OF THE ALLOSAUR. 
It is more than three feet in length. Notice how the framework of bone is as light as possible. Such a provision would be 
very necessary if the hind limbs of the Dinosaur (however powerful) were to support this huge bulk in an erect position, when 
the head would be about twenty feet from the ground 
