INDEX. 
265 
Matteucci (Signor Carlo). Electro-Physiological Researches. Seventh and last Series. 
Upon the relation between the intensity of the electric current, and that of the correspond- 
ing physiological effect, 243. 
P. 
Photo-electro graph, 111. — Thermograph, 113. — Barometrograph, ibid. — Magnetograph, ibid. 
Photographic, (on) Self-registering Meteorological and Magnetical Instruments, 111. 
Photography , on the Automatic Registration of Magnetometers and other Meteorological Instru- 
ments by, 59, 69. 
R. 
Radiation of Heat, on the amount of the, at Night, from the Earth, and from various bodies 
placed on or near the surface of the earth, 119. Section I. Results of simultaneous obser- 
vations made by Mercurial Thermometers, not self-registering, 127. Section IL Results 
of observations made by self-registering Minimum Thermometers, 164. 
Ronalds (Francis, Esq.). On Photographic Self-registering Meteorological and Magnetical 
Instruments, 111. 
S. 
Sabine (Lieut.-Colonel Edward, R.A.). On the Lunar Atmospheric Tide at St. Helena, 45. 
On the Diurnal Variation of the Magnetic Declination 
at St. Helena, 51. 
Solar Radiation, on different properties of, producing or preventing a deposit of Mercury on 
Silver Plates coated with Iodine, or its compounds with Bromine or Chlorine, modified by 
Coloured Glass Media and the Vapours of the Atmosphere, 253. 
Solar System, on the Proper Motion of the, 79. 
St. Helena, on the Lunar Atmospheric Tide at, 45. 
on the Diurnal Variation of the Magnetic Declination at, 51. 
T. 
Thermograph (Photo-), 113. 
Torpedo, laws of the electric discharge of the, — theory of the production of electricity in the, 239. 
V. 
Voltaic Arc, researches on the, and on the influence which Magnetism exerts both on this Arc, 
and on bodies transmitting interrupted Electric Currents, 31. § 1. Some phenomena con- 
cerning the Voltaic Arc, 32. § 2. Influence of Magnetism on the Voltaic Arc, 37. § 3. In- 
fluence of the permanent action of Magnetism on conducting bodies traversed by interrupted 
electric currents, 39. 
Voltaic Ignition, on certain phenomena of, 1, 17. 
2 M 
MDCCCXLVII. 
