Marvels of the Universe 1035 
André, of the Lyons Observatory, has 
suggested that Eros is double, comprising 
two bodies revolving round each other, and 
that this would explain certain regular 
changes in its brilliancy which are otherwise 
inexplicable. 
THE CERATOSAUR 
THE extinct huge reptiles to which the 
general name of Dinosaurs, or Terrible 
Lizards, has been given, were a numerous 
family, and although the prevailing form is 
similar to that of the kangaroo among VESTA AT OPPOSITION, DEC. 8th, 1914. 
mammals, there is also considerable variety The bright staris Aldebaran. The upper half of the diagram 
among them which has suggested to their contains stars in Taurus; the lower half stars in Orion. 
discoverers distinctive names. The feature that at once distinguishes Ceratosaurus from other 
Dinosaurs is the possession of a stout horn behind and above the nostrils. This, though perhaps 
the most obvious, is not the only point in which it differs from its nearest relations. There are 
peculiarities of the bones forming the spinal column, and the hip bones are united much as we find 
in birds. 
This Horned Dragon, as we may call him, was about twenty-two feet in length, judging from 
the almost complete skeleton which it was the good fortune of the late Professor Marsh to disinter 
from the Jurassic strata of North America. Its upper surface was protected in great part—and 
probably sufficiently—by a series of hard plates embedded in the skin, much as we find in the skin of 
the crocodile to-day, and extending from behind the head all down the neck and back. The skull 
has a large brain cavity, and the orbits of the eyes have thick, bony ridges over them, as shown 
in the illustration. The nostrils have separate openings far forward on the snout, and just behind 
them in the middle line rises the bony core 
of the great horn from which the Ceratosaur 
gets its name (kevas, horn; savvos, lizard). 
The teeth, it will be seen, were tolerably 
formidable weapons, and indicate that the 
Horned Dragon was no vegetarian. The 
contrast in size between the hind- and _ fore- 
limbs was very pronounced, and it is pro- 
bable that the fore-imbs were scarcely ever 
used for locomotion. 
THE RIVAL BARRAMUNDAS 
BY W. P. PYCRAFT, F.Z.S. 
THE name Barramunda has been productive 
of not a little confusion to the student of 
fishes; for it is commonly applied to two 
totally unlike and unrelated species, both 
natives of Australia. As a rule, perhaps, 
this name denotes the strange Lung-fish 
A ae x A Showing that under certain circumstances Eros would be 
(Ceratodus), of which a living specimen is nearer to the earth than Mars. 
THE ORBIT OF EROS. 
