Contents. 
I’AGE 
vi 
Certain Mathematical Instruments for Graphically Indicating the 
Direction of Refracted and Reflected Light Rays. By J. R. 
Milne, B.Sc., Carnegie Scholar in Physics. Issued separately 
July 7, 1905, ...... 
Ankylostomiasis, or the Miners’ Worm Disease. By Thomas 
Oliver, M.A., M.D., LL.D., F.R.C.P., Physician to the Royal 
Infirmary, and Professor of Physiology, University of Durham, 
College of Medicine, Newcastle-upon-Tyne. (With Two Plates.) 
Issued separately July 10, 1905, ..... 
A Form of Bolometer adapted for Physiological Investigation. 
By Walter Colquhoun, M.A., M.B., Physiological Laboratory, 
University of Glasgow. Issued separately July 10, 1905, 
A New Method of Preparing Esters. By W. W. Taylor. Com- 
municated by Professor Crum Brown, F.R.S. Issued separately 
August 29, 1905, ....... 
On the Action of Radium Bromide on the Electromotive 
Phenomena of the Eyeball of the Frog. By John G. 
M‘Kendrick, M.D., F.R.S., and Walter Colquhoun, M.A., 
M.B. Issued separately August 29, 1905, 
Cape Hunting Dogs ( Lycaon pict us) in the Gardens of the Royal 
Zoological Society of Ireland. By D. J. Cunningham, F.R.S., 
Professor of Anatomy, University of Edinburgh. (With Two 
Plates.) Issued separately August 29, 1905, 
Note on Some of the Magnetic Pmperties of Demagnetised and 
Annealed Iron. By James Russell. Issued separately August 
29, 1905, ....... 
Vanishing Aggregates of Determinant Minors. By Professor 
W. H. Metzler. Issued separately August 29, 1905, 
Les Concretions phosphatees de 1’ Agulhas Bank (Cape of Good 
Hope). Par Dr Leon W. Collet, Mem. de la Soc. Geol. Suisse, 
assistant de Sir John Murray, K.C.B. Avec une note sur la 
Glauconie qu’elles contiennent, par Gabriel W. Lee, B.Sc. 
Communique par Sir John Murray, K.C.B. (With Four 
Plates.) Issued separately September 6, 1905, . 
Evaporation of Musk and other Odorous Substances. By John 
Aitken, LL.D., F.R.S. Issued separately September 30, 1905, . 
On the Opacity of Aluminium Foil to Ions from a Flame. 
By George A. Carse, M.A., B.Sc., 1851 Exhibition Science 
Research Scholar of Edinburgh University ; Emmanuel 
College, Cambridge. Issued separately September 30, 1905, . 
The Theory of General Determinants in the Historical Order of 
Development up to 1852. By Thomas Muir, LL.D. Issued 
separately September 30, 1905, ..... 
Note on some generally accepted Views regarding Vision. By 
Dr W. Peddie. Issued separately October 23, 1905, 
Note on the Boiling Points of Aqueous Solutions. By the Rev. 
S. M. Johnston, B.A. Communicated by Professor J. G. 
MacGregor, F.R.S. Issued separately November 4, 1905, 
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