PEOCEEDINGS OF 



THE EOYAL SOCIETY. 



VOL. XXV. 



No. 171, 



CONTENTS. 



MaTf 4, 1876. 



PAGE 



I. Supplementary Note on the Theory of Ventilation. By Francis S. B. 

 Frais'^qois de Chaumont, M.D., Surgeon-Major, Army Medical Depart- 

 ment, and Conjoint Professor of Hygiene, Army Medical School .... I 



II. On the Effect of Heat on the Claloride, Bromide, and Iodide of Silver. By 



Gr. F. EODWELL, F.R.A.S., F.C.S., Science Master in Marlborough College 4 



III. On the Effects of Heat on some Chloro-brom-iodides of Silver. By Gr. F. 



EoDWELL, F.R.A.S., F.C.S., Science Master in Marlborough College . . 4 



lY. On tlie Absorption-Spectra of Bromine and Iodine Monochloride. By H. 



E. EoscoE, F.R.S., aud T. E. Thorpe 4 



T. On the Origin of Windings of Rivers in Alluvial Plains, with Remarks on 

 the Flow of Water round Bends in Pipes. By Professor James Thomsok, 

 LL.D., F.R.S.E 5 



VI. On the Modification of the Excitability of Motor Nerves produced by Injury. 



By a. J. Romanes, M.A., F.L.iS 8 



May 11, 1876. 



T. On some Thallophytes parasitic within recent Madreporaria. By P. M. 



Duncan, M.B., F.R.S., President of the Geological Society 17 



II. On the Calculation of the Trajectories of Shot. By W. D. Niven, M.A., 



F.R.A.S 18 



\^For continuation of Contents see Ath 'page of Wrapper.] 



