10 PRESIDENT'S ADDRESS. 



of teeth, though no true separate teeth in sockets are present. 

 Another recently discovered fossil is that of Tyrannosaurus, 

 a huge carnivorous Dinosaur about 35 feet long, with a skull 

 from 4 to 5 feet in length. This is, as might be expected, 

 from Wyoming, and is now set up in the New York Museum. 

 The last of these monsters to which I shall allude, a specimen 

 of Trachodon annectans, is of special interest on account of 

 its unique state of preservation, much of the skin having 

 remained intact, showing that it was covered with tubercles. 

 The fore-feet were webbed, the skin between the toes being 

 visible in the specimen. It is to be presumed that the larger 

 h : nd-feet were also webbed, but as I can find no statement 

 on this point, I expect that the hind feet of this specimen, if 

 preserved at all, exhibit no traces of the skin which once 

 covered them. From the webbing, and also the fact that 

 the skin is not thickened on the underside of the limb, it would 

 seem that this Dinosaur was aquatic in its habits. Yet if the 

 attitude in which these dinosaurs are usually represented, 

 something like that of a kangaroo, is a correct one. and if 

 the hind feet of this specimen do not indicate whether they 

 are webbed or not, it is of course possible that the hind limbs 

 only were used for progression on land, and that they would 

 show the thickening of the skin caused by contact with the 

 ground. There has, however, been considerable dissension 

 amongst authorities as to the mode of progression and ordinary 

 position of these animals. 



ASTRONOMY. 



I do not think that any very startling event has occurred 

 in the past 12 months from an astronomical point of view. 

 Halley's Comet, though distinctly disappointing to the 

 general public, especially after the unexpected advent of 

 the much finer comet which has received no better name 

 than 1910A, is an old friend, and has caused apparently 

 more interest in the astronomical world. It is still, or has- 



