CONTENTS, 
I. The Bakerian Lecture. — Contributions to the Physiology of Vision. — Part the 
Second. On some remarhahle, and hitherto unobserved, Phenomena of Binocular 
Vision (continued). By Charles Wheatstone, F.R.S., Professor of Experi- 
mental Philosophy in Kings College, London, Corresponding Member of the 
Academies of Science of Paris, Berlin, Brussels, Turin, Rome, Dublin, 8^c., 
of the Philosophical Society of Cambridge, the National Institute at Wash- 
ington, 8^c page 1 
JI. On the Automatic Registration of Magnetometers, and Meteorological Instruments, 
by Photography. — No. IV. Charles Brooke, M.B., F./?.aS'. ... 19 
III. Experimental Researches in Electricity. — Twenty-eighth Series. By Michael 
Faraday, Esq., D.C.L., F.R.S., Fullerian Prof. Chem. Royal Institution, Foreign 
Associate of the Acad. Sciences, Paris, Ord. Boruss. Pour le Mdrite, Eq., 
Memb. Royal and Imp. Acadd. of Sciences, Petersburgh, Florence, Copenhagen, 
Berlin, Gottingen, Modena, Stockholm, Munich, Bruxelles, Vienna, Bologna, 
B^c. 8fc 25 
IV. An Account of two cases, in which Ovules, or their Remains, were discovered in 
the Fallopian Tubes of Unimpregnated Women who had died during the period 
of Menstruation. By FI. Letheby, M.B., Lond., Lecturer on Chemistry and 
Medical Jurisprudence in the Medical School of the London Hospital. Com- 
municated by T. B. Curling, Esq., F.R.S. 5/ 
V. On the Air-Engine. By James Prescott Joule, F.R.S. , F.C.S., Corr. Mem. R.A. 
Turin, Sec. Lit. and Phil. Soc. Manchester, B^c 65 
Additional Note on the Preceding Paper. By William Thomson, M.A., F.R.S., 
F.R.S. E., Fellow of St. Peters College, Cambridge, and Professor of Natural 
Philosophy in the University of Glasgow 7^ 
VI. On a General Law of Density in Saturated Vapours. By J. J. W’aterston, Esq. 
Communicated by Lieut. -Col. Sabine, V.P. and Treas 83 
VII. On the Electro- Chemical Polarity of Gases. By W. R. Grove, Esq., M.A., 
F.R.S 87 
