VI 
Contents. 
11. The Adsorption of Sulphur Dioxide by Charcoal at — 10° C. By A. M. Williams, 
M.A., B.Sc., 1851 Exhibition Scholar of the University of Edinburgh, 1911-14. 
Communicated by Professor James Walker, F.R.S. Issued separately June 7, 
1917, .......... 
12. The Hurlet Secpience in the East of Scotland and the Abden Fauna as an Index 
to the Position of the Hurlet Limestone. By Peter Macnair, F.G.S. (With 
One Plate.) Issued separately June 25, 1917, . 
13. The Arithmetical Mean and the “Middle” Value of certain Meteorological 
Observations. By L. Becker, Pli.D., Regius Professor of Astronomy in the 
University of Glasgow. Issued separately June 25, 1917, 
14. On some Nuclei of Cloudy Condensation. Part III. By Dr John Aitken, 
F.R.S. Issued separately June 28, 1917, . 
15. Experiments and Observations on Crustacea : Part IV. Some Structural 
Features pertaining to Glyptonotus. By John Tait, M.D., D.Sc. (From the 
Scottish Oceanographical Laboratory and from the Physiological Laboratory 
of Edinburgh University.) (With Twenty-two Figures in the Text). Issued 
separately July 5, 1917, ........ 
16. Experiments and Observations on Crustacea : Part V. A Functional Interpreta- 
tion of certain Structural Features in the PI eon of Macrurous Decapods. By 
John Tait, M.D., D.Sc. (From the Marine Laboratory, Aberdeen, and the 
Department of Physiology, Edinburgh University.) Issued separately July 9, 
1917, .......... 
17. Observations on the Blood in Gas Poisoning. By James Miller, M.D., Captain 
R.A.M.C., and Harry Rainy, M.D., F.R.C.P.E. Issued separately October 12, 
1917, .......... 
18. Vanishing Aggregates. By Professor William H. Metzler. Issued separately 
October 12, 1917, ........ 
19. The Bone-Cave in the Valley of Allt nan Uainh (Burn of the Caves), near 
Inchnadamff, Assynt, Sutherlandshire. By B. N. Peach, LL.D., F.R.S., and 
J. Horne, LL.D., F.R.S. With Notes on the Bones found in the Cave, by 
E. T. Newton, F.R.S. (With Four Plates and Six Text-Figures.) Issued 
separately October 15, 1917, ....... 
20. The Square Roots of a Linear Vector Function. By Frank L. Hitchcock. Com- 
municated by The General Secretary. Issued separately December 10, 1917, . 
21. Contributions to the Knowledge of the Family Chermesidse. No. I. The 
Biology of the Chermes of Spruce and Larch and their Relation to Forestry. 
By H. M. Steven, B.Sc., Carnegie Research Scholar in Entomology, the 
University of Edinburgh. Communicated by Dr R. Stewart MacDougall. 
Issued separately January 15, 1918, 
Obituary Notices — 
James Burgess, C.I.E., LL.D. By C. G. Knott, D.Sc., LL.D., 
Benjamin Hall Blytli, M.A., Past-Pres. Inst.C.E. By W. A. Tait, M.lnst.C.E., 
PAGK 
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