INDEX. 
of Gamboge, 166. Action of Ammonium 
Chloride, 167. Action of Scammony, 169. 
Action of Euonymin, 170. Action of Ividin, 
173. Action of Leptandrin, 176. Action of 
Sanguinarin, 178. Action of Ipecacuan, 181. 
Action of Colocynth, 185. Action of Jalap, | 
188. Action of Taraxacum, 190. Action of 
Nitro- hydrochloric Acid, 190. Action of 
Sodium and Potassium Tartrate, 193. Action 
of Sodium Phosphate, 195. Action of Sodium 
Sulphate, 196. Action of Potassium Sulphate, 
198. Action of Sodium Bicarbonate, 201. 
Action of Potassium Bicarbonate, 202. Action 
of Iodide of Potassium, 203. Action of 
Physostigma, 204. Action of Atropia, 208. 
Action of Menispermin, 210. Action of 
Baptisin, 212. Action of Phytolaccin, 213. 
Action of Hydrastin, 216. Action of Jug- 
landin, 218. Action of Benzoic Acid and its 
Compounds, 219. Action of Sodium Salicy- 
late, 223. Action of Ammonium Phosphate 
and of Tannic Acid, 224. Action of Acetate 
of Lead, 226. Action of Jaborandi, 228. 
Action of Sulphate of Manganese, 230. Action 
of Morphia, 232. Action of Hyoscyamus, 234. 
Action of Alcohol, 236. Action of Mercurial 
Salts, 237. Summary of Results, 253. Mode 
of Action of Hepatic Stimulants, 258. Hepatic 
Depressants, 259. Concluding Observations, 
260. 
S 
Scouutze (Professor Franz EiHarD). On 
the Structure and Arrangement of the Soft 
Parts in Euplectella aspergillum, 661. The 
Soft Parts, 661. The Ectoderm, 669. The 
Endoderm, 669. The Mesoderm, 670. The 
Genital Products, 671. The Commensals of 
Euplectella, 671. Amphibrachium Euplec- 
tella, 672. 
Scott's Experiments on Bile Secretion, 136. 
Serpentine-olivine Rocks of Basin of Firth of Forth, 
504, 
Smyrx (Professor P1azz1), Astronomer-Royal for Scot- 
land, F.R.S.E. Norticss of the New Rock Ther- 
mometers at the Royal Observatory, Edinburgh, 
and what they are for, 637. The Making and 
Placing of the New Thermometers, 637. The 
Problem with the Old Thermometers, 639. 
Their Next Use in Level Fluctuations, 639. 
Their Employment in Earth-heat History, by 
Sir Witu1am THomson, 640. Their subsequent 
Discovery, in 1870, of the Eleven Year Cycle 
of Supra-annual Waves of Heat and Cold, 641. 
731 
The Published Predictions in 1872, for 1878, 
1879, and 1880, 642. The Spoiled Predictions 
in 1877, under the Influence of Erroneous 
Sun-spot Dates, 643. The Rectified Predic- 
tions in 1879, when the true date of that Sun- 
spot Minimum was ascertained, 644. How to 
obtain Correct Dates of Future Sun-spot 
Minima,—to enable Predictions of Weather to 
be useful to National Agriculture, 645. 
Account of the Making and Placing of the 
New Rock Thermometers, by Messrs R. Apr 
and T. WepprrBurN, 647. The Cyclical 
Seasons of 1879 and 1880, as predicted in 
1872, 650. Scottish Meteorological Data 
from 1821-1880, arranged in Quadruple 
Annual Means for Cyclical Inquiries, 651. 
—— Tue Sonar Spectrum in 1877-78, with some 
Practical Idea of its Probable Temperature of 
Origination, 285. 
Part I.—Of the Instruments employed and the 
Range of Spectrum observed, 285-287. Part I. 
—Of a Temperature Deduction touching the 
Photospheric Surface of the Sun, 287-291. Part 
IIJ.—The whole Solar Spectrum Observations, 
291-336. Part IV.—Accompanying Meteoro- 
logical Journal, 337. Part V.—Numerical 
Steps in Spectroscopy according to Tempera- 
ture, 338-340. Appendix.—Professor Lang- 
ley’s American Observations on the Tempera- 
ture of the Sun’s Photospheric Surface, 285. 
Solar Spectrum in 1877-1878. See SmytxH (Pro- 
fessor). 
Sound. On the Transmission of Sound by Loose 
Electrical Contact, 281. By Professor Biyru, 
E.R.S.E. 
Stromateus. A genus of the Platysomidz, 368. 
Sulphide of Potassium. Its Action upon Chloro- 
form. By W. W. J. Nicon, M.A., 531. 
¥ 
Tair (Professor), F.R.S.E. Note on a Theorem in 
Geometry of Position, 657. The Edges of any 
Polyhedron, which has Trihedral Summits only, 
can be divided into Three Groups, one from each 
Group ending in each Summit, 657. Hamilton’s 
Icosian Game an Application of this Theorem, 
657. A Number of Different Ways of Con- 
sidering the Question, 657. 
—— On Minding’s Theorem, 675. Proved by 
Quaternion Methods, 675. Problem—Given a 
set of rectangular unit vectors, which may take 
any initial position: let two of them, after a 
homogeneous strain, become given vectors at 
right angles to one another: find what the 
