vii 



Page 



of Decomposition. — Part IV. By Augustus Matthiessen, F.R.S., Lec- 

 ' turer on Chemistry in St. Bartholomew's Hospital, and C. R. A. Wright, 

 B.Sc, London 340 



On the Corrections of Bouyard's Elements of Jupiter and Saturn (Paris, 

 1821). By Hugh Breen, formerly of the Royal Observatory, Green- 

 wich 844 



On the Structure of the Red Blood-corpuscles of Oviparous Vertebrate. By 

 William S. Savory, F.R.S 346 



Spectroscopic Observations of the Sun. — No. III. By J. Norman Lockyer, 

 F.R.A.S 350 



Note on the Blood-vessel-system of the Retina of the Hedgehog (being a 

 fourth Contribution to the Anatomy of the Retina). By J. W. Hulke, 

 F.R.S. , Assistant-Surgeon to the Middlesex Hospital and the Royal Lon- 

 don Ophthalmic Hospital 357 



On the Measurement of the Luminous Intensity of Light. By William 

 Crookes, F.R.S. &c ...358 



Addendum to description of Photometer. By W. Crookes, F.R.S 369 



Preliminary Notice on the Mineral Constituents of the Breitenbach Mete- 

 orite. By Professor N. Story Maskelyne, M.A 370 



On the Derivatives of Propane (Hydride of Propyl). By C. Schorlemmer 372 



Researches in Animal Electricity. By Charles Bland RadclifFe, M.D 377 



On the Source of Free Hydrochloric Acid in the Gastric Juice. By Professor 



E. N. Horsford, Cambridge, U. S. A 391 



Contributions to the History of Explosive Agents. By F. A. Abel, F.R.S., 

 For. Sec. C.S . 395 



Results of Magnetlcal Observations made at Ascension Island, Latitude 

 7° 55' 20" South, Longitude 14° 25' 80" W^est, from July 1863 to March 

 1866. By Lieut. Rokeby, R.M 397 



Description of Parkeria and Loftusia, two gigantic Types of Arenaceous 

 Foraminifera. By Dr. Carpenter, V.P.R.S.^and H. B. Brady, F.L.S. . . 400 



On Remains of a large extinct Lama (Palauchenia magna, Owen) from 

 Quaternary deposits in the Valley of Mexico. By Professor Owen, 



F. R.S. &c . ; . 405 



Cn the Proof of the Law of Errors of Observations. By M. W. Crofton, 

 F.R.S 406 



On a certain Excretion of Carbonic Acid by Living Plants. By J. Brough- 

 ton, B.Sc, F.C.S., Chemist to the Cinchona Plantations of the Madras 

 Government 408 



On the Causes of the Loss of the Iron-built Sailing-ship 1 Glenorchy.' By 

 Archibald Smith, Esq., M.A., LL.D., F.R.S 408 



Spectroscopic Observations of the Sun. — No. IV. By J. Norman Lockyer, 

 F.R.A.S ...415 



