CONTENTS. 
(B.) 
VOL. 181. 
I. A Chemical Inquiry into the Phenomena of Human Respiration. By William 
Marcet, M.D., F.R.S. . . . . ..page 1 
II. On Out-lying Nerve-cells in the Mammalian Sphial-Cord. By Ch. S. Sher¬ 
rington, M.A., M.B., (&c., Fellow of Gonville and Caius College, Cambridge. 
Communicated hy Professor M. Foster, Sec. R.S . 33 
III. An Experimental Investigation into the Arrangement of the Excitable Fibres of 
the Internal Cap)sule of the Bonnet Monkey (Macacus sinicus). By Charles 
E. Beevor, M.D., F.R.C.P., and Victor Horsley, B.S., F.R.S. {From the 
Laboratory of the Brown Institution) . 4 9 
IV. On the Organisation of the Fossil Plants of the Coed-Meets ares. — -Part XVII. 
By Wm. C. Williamson, LL.D., FR .S., Professor of Boteiny in the Owens 
College, Manchester . 89 
V. The Nitrifying Process anel its Speeific Ferment .—Part I, By Percy F. Frank- 
LAND, Ph.D., B.Sc. (Lond.), A.R.S.M., F.I.C., Professor of Chemistry in 
University College, Dundee, etnd Grace C. Frankland. Communicated by 
Professor Thorpe, F.R.S, .107 
VI. A Record of the Results obtedneel by Electriced Excitation of the so-called Motor 
Cortex and Internal Captsule in an Orang-Outang (Simia satyrus). By 
Charles E. Beevor. M.D., E.R.C.P., and Victor Horsley, B.S., F.R.S. 
[From the Laboratory of the Brown Institution) .129 
