180 A MEMOIR OF ROBERT ETHERIDGE, F.R.S. 
in 1881, he was responsible for preparing or supervising 
ail the lists of fossils published in the Survey Memoirs. 
In addition to these labours he aided Huxley, who was 
Professor of Natural History at the Royal School of Mines, 
by giving annually for fifteen years demonstrations in 
palaeontology to the students. Together in 1865 they issued 
a catalogue of the Collection of Fossils in the Museum of 
Practical Geology, the catalogue being the work of 
Etheridge, and the explanatory preface being written by 
Huxley. At this time the fossil vertebrata and the arrange- 
ment of all the fossils in the Museum were under the 
charge of Prof. Huxley, aided after 1866 by Mr. E. T. 
Newton, while the naming and listing of the invertebrata 
were under the charge of Mr. Etheridge, aided by the 
talented and painstaking assistant palaeontologist, Mr. 
George Sharman. 
The need of full lists of the known species of fossils, 
with references to figures and geological horizons, led 
Etheridge in 1865 to commence his great work on the 
Fossils of the British Islands, Stratigraphically and 
Zoologically Arranged, 
The excellent Catalogue of British Fossils, ’ by John 
Morris, of which a second edition was published in 1854, 
did not give the stratigraphical information that it was 
increasingly necessary to record. Hence the importance 
of this new undertaking. The difficulties that arose were 
in connection with the printing, as no publisher from a 
business point of view could well incur the responsibility. 
To aid and encourage Etheridge in his task, the Wollaston 
Donation Fund in 1871 and the Murchison Medal in 1880 
were awarded to him by the Geological Society. It was 
not, however,' until 1888 that the first volume of the work 
was printed and issued by the Delegates of the Oxford 
University Press. This comprised the Palaeozoic species, 
the information being brought up to 1886. The succeeding 
