558 



INDEX. 



Collins (M.) on the attraction of el- 

 lipsoids, 223. 



Collodion, new process for rendering, 

 more sensitive, 24, 213. 



Collodion plates, on the methods of 

 preserving the sensitiveness of, 1 11 . 



Connell (Prof. A.) on a new hygro- 

 meter or dew-point instrument, 81. 



Creosote, constitution of coal-tar, 55 1 . 



Cresyle, on some compounds of, 551. 



Crookes (W.) on a method of pre- 

 serving the sensitiveness of collo- 

 dion plates. 111. 



Cuminic alcohol, on, 555. 



Cyclone, on the changes of wind in 

 a, 469. 



Day (Dr. A.) on the rotation of the 

 pendulum, 19 ; mineralogical no- 

 tices, 137. 



Dove (Prof.) on the bearing of the 

 barometrical and hygrometrical ob- 

 servations at Hobarton and the 

 Cape of Good Hope on the general 

 theory of the variations of atmo- 

 spherical phamomena, 294 ; on the 

 changes of wind in a cyclone, 469. 



Electric currents, on the thermal ef- 

 fects of, in unequally heated con- 

 ductors, 62. 



Electricity, on the conductivity of 

 heated glass for, 12 ; on the prin- 

 ciples which govern the disengage- 

 ment of, in chemical action, 76; 

 on the conducting power of insu- 

 lators at high temperatures for, 

 19 ; on the conductibihty of hquids 

 for, 465. 



in equilibrium, on the mathe- 

 matical theory of, 42, 



of flame, on the, 399. 



Ellipsoids, on the attraction of, 223. 

 Endosmose, observations on, 151. 

 Erythrozym, on the properties of, 



161. 



Flame, on the electricity of, 399. 



Fluids, on the thermal eflccts of, in 

 motion, 321. 



Gerling (Prof.), description of two 

 letter-scales, 113. 



Glass, on the conductivity of heated, 

 for electricity, 12. 



Goniometer, Wollaston's, on obtain- 

 ing rapid adjustments with, 430. 



Graham (Prof.) on osmotic force, 151 . 



Greg (R. P.) on meteorolites or ae- 

 rohtes, considered geographically. 



statistically, and cosmically, 329, 

 449. 



Griffith (Dr. J. W.) on the relation 

 of the angular aperture of object- 

 glasses to their penetrating power 

 and to oblique light, 70. 



Grove (W. R.) on the electricity of 

 flame, 403. 



Hamilton (Sir W. R.) on some exten- 

 sions of quaternions, 125, 261. 



Hargreave (C. J.) on the law of prime 

 numbers, 114. 



Hassall (Dr. A. H.) on the frequent 

 occurrence of indigo in human 

 urine, 233. 



Haughton (Rev. S.) on some new 

 laws of reflexion of polarized light, 

 507. 



Huxley (T. H.) on the anatomy of 

 the Brachiopoda, 225. 



Hydrargyrsethyle, on some combina- 

 tions of, 238. 



Hydrocyanaldine, composition of, 

 326. 



Hydrogen, method of substituting 

 iodine for, in organic compounds, 

 201. 



Hygrometer, description of a new, 

 81. 



Indigo, on the frequent occurrence of, 

 in human urine, 233. 



lodmecone, on the preparation and 

 properties of, 206. 



lodopyromeconic acid, on the pro- 

 perties of, 201. 



Isotropic bodies, on the double re- 

 fraction temporai-ily produced in, 

 241, 342. 



Jones (Dr. H. B.) on the oxidation 

 of ammonia in the body, 217. 



Joule (J. P.) on the thermal eff'ects of 

 fluids in motion, 321. 



Keber (F.) on the porosity of bodies, 

 287, 370. 



Kraut (M.) on cuminic alcohol, 555. 



Leblanc (F.) on the electro-chemical 

 decomposition of water, 237. 



Letter-scales, description of two new, 

 113. 



Light, on certain recent investigations 

 m the theory of, 42 ; on some new 

 laws of reflexion of polarized, 507. 



Liquids, motion of, on some phaeuo- 

 mena connected with the, /4 ; on 

 the conductibihty of, for electri- 

 city, 466. 



