516 
Proceedings of Royal Society of Edinburgh. 
2. The Seasonal Changes in the Pressure and Temperature of the 
Atmosphere from May to June and November to December. By Dr 
Buchan. 
3. On Supersaturation. By W. W. J. Nicol, M.A., D.Sc. pp. 473-480. 
4. On the Geometrical Investigation of the Circular Functions of 30 
and 50. By Professor Anglin, LL.D. pp. 453-456. 
5. On some Nuclei of Cloudy Condensation. By John Aitken, F.R.S. 
Trails, xxxix. pp. 15-25. 
The following Candidates for Fellowship were balloted for and 
declared duly elected Fellows of the Society : — 
Mr John William Shepherd. 
Mr Alfred George Nash, B.Sc. 
ELEVENTH ORDINARY MEETING. 
Monday , 17th May 1897. 
Sir Arthur Mitchell, K.C.B., Vice-President, in the Chair. 
The following Communications were read : — 
1. Obituary Notice of the late Dr E. Sang. By D. Bruce Peebles. 
pp. xvii.-xxxii. 
2. Dschabir Ben Hayyan and the Chemical Writings ascribed to him. 
Part II. By Professor John Ferguson. 
3. On some Type Specimens of Lepidoptera and Coleoptera in the 
Edinburgh Museum of Science and Art. By P. H. Grimshaw, F.E.S. 
Communicated by Dr Ramsay H. Traquair, F.R.S. Trans, xxxix. 
pp. 1-11. (Abstract.) pp. 326, 327. 
4. On a New Variety of Hestina nama , Dbl. By the Same. Trans. 
xxxix. pp. 13,14. 
TWELFTH ORDINARY MEETING. 
Monday , 7th June 1897. 
Professor James Geikie, F.R.S., Vice-President, in the Chair. 
Dr John Carruthers Beattie and Mr Robert Caird were 
admitted Fellows of the Society. 
The Chairman announced that the Council had awarded : — 
1. The Gunning Victoria Jubilee Prize for 1893-96 to Mr John 
Aitken, for his brilliant investigations in Physics, especially in connec- 
tion with the formation and condensation of aqueous vapour. 
