Vlll 



Notes of Researches on the Poly- Ammonias. No. VIII. Action of 

 Nitrous Acid upon Nitrophenvlenediamine. By A. W. Hofmann, 

 LL.D., F.R.S ." 495 



On the Formula investigated by Dr. Brinkley for the general Term 

 in the Development of Lagrange's Expression for the Summa- 

 tion of Series and for successive Integration. By Sir J. F. W. 

 Herschel, Bart., F.R.S 500 



On the Thermal Effects of Fluids in Motion. By J. P. Joule, LL.D., 

 F.R.S., and Professor W. Thomson, LL.D., F.R.S 502 



On the Nature of the Light emitted by heated Tourmaline. By 

 Balfour Stewart, Esq., M.A ; 503 



Researches on the Foraminifera. Fourth and concluding Series. By 

 W. B. Carpenter, M.D., F.R.S 506 



Experimental Researches on various questions concerning Sensibility. 

 By E. Brown-Sequard, M.D., F.R.S 510 



On Quaternary Cubics. By the Rev. George Salmon 513 



On the Construction of a new Calorimeter for determining the Ra- 

 diating Powers of Surfaces, and its application to the Surfaces of 

 various Mineral Substances. By W. Hopkins, Esq., M.A., F.R.S. 514 



On Isoprene and Caoutchine. By C. Greville Williams, Esq 516 



On the Thermal Effects of Fluids in Motion Temperature of Bodies 

 moving in Air. By J. P. Joule, LL.D., F.R.S., and Professor W. 

 Thomson, LL.D., F.R.S 519 



On the Distribution of Nerves to the Elementary Fibres of Striped 

 Muscle. By Lionel S. Beale, M.B., F.R.S 519 



On the Effects produced by Freezing on the Physiological Properties 

 of Muscles. By Michael Foster, B. A., M.D 523 



On the alleged Sugar-forming Function of the Liver. By Frederick 

 W. Pavy, M.D 528 



A new Ozone-box and Test-slips. By E. J. Lowe, Esq 531 



On the Temperature of the Flowers and Leaves of Plants. By E. J. 

 Lowe, Esq 534 



Reduction and Discussion of the Deviations of the Compass observed 

 on board of all the Iron-built ships and a selection of Wood-built 

 Steam-ships in Her Majesty's Navy, and the Iron Steam-ship 

 1 Great Eastern/ being a Report to the Hydrographer of the 

 Admiralty. By Frederick J. Evans, Esq 538 



On the Sources of the Nitrogen of Vegetation ; with special reference 

 to the Question whether Plants assimilate free or uncombined 

 Nitrogen. By J. B. Lawes, Esq., F.R.S; J. H. Gilbert, Ph.D., 

 F.R.S. ; and Evan Pugh, Ph.D 544 



Observations made with the Polariscope during the 'Fox' Arctic 

 Expedition. By David Walker, M.I)., Surgeon to the Expedition, 

 in a Report transmitted by Sir Leopold M'Clintock 558 



Notice of 'The Royal Charter Storm' in October 1859. By Rear- 

 Admiral Robert FitzRoy, F.R.S 561 



