1182 Proceedings of Royal Society of Edinburgh. [sess. 
3. Networks of the Plane in Absolute Geometry. By Duncan M. Y. 
Sommerville, M.A., B.Sc., University of St Andrews. Communicated 
by Professor P. R. Scott Lang. ( With Lantern Illustrations.) Trans., 
vol. 41, pp. 725-747. ( Abstract , pp. 392-394.) 
Mr David Corrie, F.C.S., Mr Wm. Alex. Francis Balfour 
Browne, M.A., and Dr David Lawson were balloted for, and 
declared duly elected Fellows of the Society. 
FIFTH ORDINARY MEETING. 
Monday , 9th January 1905. 
Professor Geikie, LL.D., D.C.L., Vice-President, in the Chair. 
The Gunning Victoria Jubilee Prize for 1900-1904 was 
presented to Sir James Dewar, LL.D., D.Sc., F.R.S., etc., for his 
Researches on the Liquefaction of Gases, extending over the last 
quarter of a century, and on the Chemical and Physical Properties 
of Substances at Low Temperatures, his earliest papers being 
published in the Transactions and Proceedings of the Society. 
The Chairman, on presenting the Prize, said : — 
In 1867 Mr James Dewar read a paper to this Society on the 
oxidation of Phenol to Oxalic Acid. This, his first contribution 
to the Chemistry of the Aromatic Compounds, was followed by a 
more important one on the oxidation of Picoline, first given by 
him to the British Association in 1868, and in a fuller form to 
this Society in 1870. In this he proposed a graphic formula for 
Pyridine which expresses the relation now universally recognised 
between the constitution of Benzene and that of Pyridine. 
Dewar’s experiments on the liquefaction of gases extend over 
the last quarter of a century, and have culminated in the produc- 
tion of liquid and solid Hydrogen in large quantities, so that as 
thirty-five years ago he studied the chemical and physical properties 
of Hydrogenium solidified in Palladium, he has now given us the 
properties of the solid element Hydrogen itself. Having thus in 
his hands the means of preparing large quantities of liquefied gases, 
and having devised most ingenious arrangements for keeping these 
