512 Proceedings of Boy at Society of Edinhurgh. [sess. 
changes, and the relations between the temperature of water and 
air. 
The Neill Prize for the period 1889-92 was presented to John 
Horne, Esq., F.G.S., for his investigations into the Geological 
Structure and Petrology of the North-West Highlands. 
The President, on presenting the Prize, said : — 
Mr Horne is one of our most distinguished field geologists, and 
has borne a leading part in working out the extremely complicated 
structure of the North-West Highlands — the result of his and his 
colleague’s labours having greatly increased our knowledge of 
“ mountain-building.” During the past five years he has published 
the results of these and other correlated investigations in the 
Journal of the London Geological Society, the Transactions of the 
Royal Society of Edinburgh, and other scientific journals, &c. In 
conjunction with Mr B. N. Peach he has established the existence 
in the North-West Highlands of the Olenellus Zone of the Cam- 
brian System — a very important addition to our knowledge of the 
stratigraphical geology of our islands. 
Mr Horne is also distinguished for his researches in glacial geo- 
logy, and within the present and immediately preceding years 
(1892, 1893, 1894) has made interesting and valuable communica- 
tions upon the subject. In 1892 he was appointed chairman of a 
committee of the Geological Section of the British Association to 
investigate certain fossiliferous glacial deposits, with a view to ascer- 
taining their exact geographical horizon. The report of this com- 
mittee, presented at last meeting of the Association, was drafted by 
Mr Horne, and is a distinct addition to our knowledge. 
The following Communications were read : — 
1. On some Problems of Evolution. By Professor D’Arcy W. 
Thompson. 
2. On a new form of Water-Collecting Bottle. By Mr H. N. 
Dickson. P. xx. 252. 
3. On the Determination of Sea Water Densities by Hydrometers 
and Sprengel Tubes. By Mr W. S. Axdbrson. Communicated by 
Dr John Murray. 
4. On the Origin and Distribution of Manganese Oxides and 
Manganese Nodules on the Floor of the Ocean. By Dr John Murray 
and Mr Egbert Irvine. T. xxxvii. 721. 
5. On the Constitution of the Earth’s Crust on the Continents and 
beneath the Oceans. By Dr John Murray. 
