IXMIX. 



XXV 



cortex and internal capsule in an 

 orang outang (Simia gatyrus), 159. 

 Horsley (V.) and P. Semon, an experi- 

 mental investigation of the central 

 motor innervation of the larynx. 

 1'art I. Excitation experiments, 



:m. 



and W. Spencer, on the 



changes produced in the circulation 

 and respiration by increase of the 

 intracranial pressure or tension, 273. 



Huggins (W.) and Mrs. Huggins, note 

 on the photographic spectrum of the 

 great nebula in Orion, 151, 213. 



on a new group of lines in 



the photographic spectrum of Sirius, 

 152, 216. 



on a re-detennination of the 



principal line in the spectrum of the 

 nebula in Orion, and on the character 

 of the line, 151, 202. 



Hydrogen, on the specific heats of gases, 

 at constant volume. Part I. Air, 

 carbon dioxide, aud (Joly), 440. 



Ice, observations on pure. Part II 

 (Andrews), IOC. 



Ice crystal, on the plasticity of an. 

 Preliminary note (McConnel), 259. 



Internal capsule in an orang outarg 

 (Simia satyr us), a record of the 

 results obtained by electrical excita- 

 tion of the so-called motor cortex and 

 (Beevor and Horsley), 159. 



Intracranial pressure or tension, on the 

 changes produced in the circulation 

 and respirat'on by increase of the 

 (Spencer and Horsley), 73. 



Iron and nickel, magnetic properties of 

 alloys of (Hopkinson), 1. 



Iron and steel, the passive state of. 

 Part I (Andrews), 116. 



Joly (J.) on the specific heats of gases 

 at constant volume. Part I. Air, 

 carbon dioxide, and hydrogen, 440. 



Jones (J. V.) on the determination of 

 the specific resistance of mercury in 

 absolute measure, 434. 



Kerr (John) elected, 104. 



. admitted, 220. 



Kew and Greenwich observatories, 

 account of recent pendulum opera- 

 tions for determining the relative 

 force of gravity at the (Walker), 105. 



Kew Committee, report of, 491. 



Klein (.) a contribution to the etio- 

 logy of diphtheria, 71. 



Larynx, an experimental investigation 

 of the central motor innervation of 



the. Part I. Excitation experi- 

 ments (Semon and Ilorsley), 341. 



" Latent stimulation," photographic 

 determination of tlie time-relations 

 of the changes which take place in 

 muscle during the period of so-called 

 (Sanderson), 14. 



Lea (Arthur Sheridan) elected, 104. 



admitted, 161. 



Liquid in motion, on the alleged slip- 

 ping at the boundary of a (Whethain), 

 225. 



Liveing (Or. D.) and J. Dewar, the 

 spectroscopic properties of dust, 437. 



Lockyer (J. N.) note on the spectrum of 

 the nebula of Orion, 198. 



on the chief line in the spectrum 



of the nebulae, 167. 



on the spectra of comet 1890 and 



the nebula G.C. 4058, 165, 217. 



preliminary note on photographs of 



the spectrum of the nebula in Orion, 

 199. 



McConnel (J. C.) on the plasticity of 

 an ice crystal. (Preliminary note). 

 259. 



MacMahon (Percy Alexander; elected, 

 104. 



admitted, 151. 



Magnetic permeability of rocks and 

 regional magnetic disturbance-?, on 

 the relation between (Riicker), 358, 

 505. 



Magnetic properties of alloys of nickel 

 and iron (Hopkinson), 1. 



Magnetism, contributions to the mole- 

 cular theory of induced (Ewing), 342. 



on the causes of the phenomena of 



terrestrial, and on some electro-me- 

 chanism for exhibiting the secular 

 changes in its horizontal and vertical 

 components (Wilde), 358. 



- and recalescence (Hopkinson), 

 412. 



Magnetometer, preliminary note on a 

 new (Slroud), 260. 



Mammalian ova, preliminary note on 

 the transplantation and growth of, 

 within a uterine foster-mother 

 (Heape), 457. 



Mammals, the development of the svm- 

 pathetic nervous system in (Paterson) 

 19. 



Marmoset monkey, on the course of the 

 fibres of the cingulum and the poste- 

 rior parts of the corpus callosum and 

 of the fornix in the (Beevor), 271. 



Martin (S.) the chemical products of 

 the growth of Bacillus iinthraci* and 

 their physiological action, 78. 



and D. Williams, a further note 



