V 



low of Caius College, Cambridge, and Professor of Natural Philo- 

 sophy and Astronomy in King's College, London page 76 



On an Air-Engine. By James Preseott Joule, F.R.S., &e 77 



Experiments made at York (Lat. 53° 58' N.) on the Deviation of the 

 Plane of Vibration of a Pendulum from the meridional and other 

 vertical planes. By John Philhps, Esq., F.R.S 78 



Note on instantaneous Photographic images. By H. F. Talbot, Esq., 

 F.R.S., &c 82 



On the Impregnation of the Ovum, in the Amphibia (Second Series), 

 and on the Nature of the Impregnating Influence. By George New- 

 port, Esq., F.R.S., F.L.S., &c 82 



The Human Iris ; its Structm'e and Physiology. By Bernard E. 

 Brodhmst, M.R.C.S 84 



On the Automatic Temperature-compensation of the Force Magneto- 

 meters. By C. Brooke, M.B., F.R.S 85 



On the Reproduction of the Ascaris Mystax. By Henry Nelson, 

 M.D 86 



On Induced and other Magnetic Forces. By Sir W. Snow Harris, 

 F.R.S., &c 87 



Researches into the Identity of the Existences or Forces, Light, Heat, 

 Electricity and Magnetism. By John Goodman, M.D 92 



On the Mean Temperature of the Observatory at Highfield House, 

 near Nottingham, from the year 1810 to 1850. By Edward Joseph 

 Lowe, Esq., F.R.A.S 94 



On Depressions of the Wet-bulb Thermometer during the Hot 

 Season at Ahmednuggur, in the Deccan. By Colonel Sykes, 

 F.R.S., &c 96 



On a General Law of Density in saturated Vapours. By J. J. Wa- 

 terston. Esq 97 



Experimental Researches in Electricity. Twenty-eighth Series. On 

 Lines of Magnetic Force ; their definite character ; and their dis- 

 tribution within a Magnet and through Space. By Michael Fa- 

 raday, Esq., D.C.L., F.R.S., &c 101 



A Proof (by means of a series) that every Number is composed of 4 

 Square Numbers, or less, without reference to the properties of 

 Prime Numbers. By Sir Frederick Pollock, Lord Chief Baron, 

 F.R.S., &c 132 



On the Valves of the Heart. By W. Savory, Esq 133 



1852. 



Contributions to the Physiology of Vision. — Part II. On some re- 

 markable, and hitherto unobserved, phaenomena of Binocular Vi- 

 sion,— (continued). By Charles Wheatstone, Esq., F.R.S 138 



On the Development of the Ductless Glands of the Chick. By Henry 

 Gray, Demonstrator of Anatomy at St. George's Hospital 141 



Researches on the Geometrical Properties of Elhptic Integrals. By 

 the Rev. James Booth, LL.D., F.R.S., &c " 143 



