i8s7-59 
FULLERIAN PROFESSOR 
69 
Worship of Physiology at the Royal Institution of 
Great Britain. As the course of lectures was to 
^egin in January 1858, the latter part of 1857 was 
^Pent in preparing materials for these lectures, 
'•he subject of which was ‘ Fossil Mammals.’ 
The course lasted from January 25 to April 12, 
'S58. As lecturer to the Royal School of Mines, 
Jernryn Street, he gave a course on Fossil Birds, 
first lecture being delivered on March 8. 
Besides these two courses in the spring of 
this year, he also lectured at the South Kensing- 
ton Museum on the ‘Animal Kingdom and its 
Economic Use.’ 
One of Owen’s chief discoveries was made this 
year — the identification of the fossil skull known 
Cyamodus [Placodzis) laticeps as a reptile in- 
stead of a fish. Figures of the skull are here 
Siven, and show the great crushing teeth on the 
palate. 
In a letter to one of his sisters he refers to this 
year’s course of lectures at J ermyn Street. ‘ When 
they are over,’ he says, ‘ I shall have to buckle-to 
my “ Address to the British Association.” 
^ look forward confidently to that being the last 
public post or position the duties of which I can- 
Uot well decline, and I hope some years of com- 
parative ease may be spared to me. The pencil- 
sketches on this page are by Admiral Moorsom, 
to whom I have been expounding the action of 
hshes’ tails in reference to improvements in the 
