678 
O 
Oxygen, Spectrum of. By Prazzi Sayru, F.R.S.E., 
Astronomer-Royal for Scotland. On the Con- 
stitution of the Lines forming the Low- 
Temperature Spectrum of Oxygen, 419. 
Oxygen in the Sun, 422. Oxygen of the 
Earth’s Atmosphere in the Tellurie Solar 
Spectrum, 423. 
E 
Paleocaris, 85, 515. 
Paleocrangon, 84, 515. 
Palceopteridee, 540. 
Pracu (B. N.), F.R.S.E. On some new Crustaceans 
from the Lower Carboniferous Rocks of Esk- 
dale and Liddesdale, 73. ~~ 
— Further Researches amore Mie womiiere and 
Ayraconida of the Carboniferous Rocks of the 
Scottish Border, 511. 
Pecopteridex, 547. 
Pedicellarie, The Histology of. By Patrick GEDDES, 
F.R.S.E., and Frank E. Bepparp, F.R.S.E. 
383. 
Phanerosteon, 39. 
Phosphines, Prepared from Phosphide of Sodium, 
189. Phosphine products, — Tetrabenzyl- 
Phosphonium: Chloride and its compounds, 
191. Action of Heat on Salts of Tetrabenzyl- 
Phosphonium, 213, Tribenzyl-Phosphine and 
its compounds, 203. Preparation of, 211. 
Action of Heat on, 215. 
Phosphorus-Betaines. By Professor Lerts, F.R.S.E. 
A comparison of the Properties of Nitrogen, 
Phosphorus, and Sulphur, 285. Action of Chlor- 
acetic Acid on Triethyl-Phosphine, 301. Hydro- 
bromate of Triethyl-Phosphorus-Betaine, 304, 
Hydriodate of Triethyl-Phosphorus-Betaine, 
305, Hydrate of Triethyl-Phosphorus-Betaine, 
306. Sulphate of Triethyl-Phosphorus-Betaine, 
307. Chloroplatinate of Ethyl-Chlorate of 
Triethyl-Phosphorus-Betaine, 308. Action of 
Oxide of Silver on the Ethyl-Chlorate, 309. 
Action of Heat on the Compounds of Triethyl- 
Phosphorus-Betaines, 310, Action of Caustic 
Potash on these Compounds, 318. Action of 
Bromacetic Acid on Triethyl-Phosphine, 321. 
Action of Hydrobromic Acid on Oxide of 
Triethyl-Phosphine, 332. 
Phyllopoda (Fossil), 511. 
Platysomus superbus, 58. 
Pleurochaeta Moseley’. By ¥. E. Bepparp, F.R.S.E., 
481. Its Tegumentary System, 483. Muscular 
Coats, 484, Clitellum, 488. Peritoneal Mem- 
INDEX. 
brane, 489, Body Cavity, 490, Alimentary 
Tract, 490. Circulatory system, 495. Nervous 
system, 499. Generative system, 501. Cocoon 
and Embryos, 504, 
Pothocites, 548. 
Prestwichia, 525. 
Pseudo-Galathea, 513. 
Psilomelane, 432. 
Pycnophyllum, 544. 
Pyrolusite, 427, 
R 
Racopteris Machaneki, 540. 
Red Resin, from Dracena Cinnabari. 
Rhacophyllum Lactuca, 540, 
Rhadinichthys, 25, 34. 
Rhizodopsis. On the Cranial Osteology of. By 
Ramsay A. Traquair, M.D., F.R.S.E., 167. 
Rhizodopsis sauroides, 169. 
See Draccena. 
8 
Schutaia (Fossil), 545. 
Scorpions. Some new Species of Fossil Scorpions. 
By B. N. Peacu, F.R.S.E. oscorpius tuber- 
culatus, n, sp., 398. Loscorpius glaber, n. sp., 
400. oscorpius euglyptus, nu. sp., 402. Ho- 
scorpius inflatus, n. sp., 405. Genus Eoscorpius, 
Merrx and Worruen, 408. 
StapEen (W. Percy), F.L.S. Description of Mi- 
master, a new Genus of Asteroidea from the 
Feroe Channel, 579. 
Smyta (Piazzt), F.R.S.E., Astronomer-Royal for 
Scotland. Gaseous Spectra in Vacuum Tubes, 
under small Dispersion, and at low Electric 
Temperature. General Introduction, 93. 
Practical commencement described, 96. On 
the Tables of 20 Gas-Vacuum Tubes, 97 and 
Appendix I. Examination of the Observed 
Quantities,"and Elimination of Impurity Effects, 
97, Search for New Lines and their Gaseous 
Identifications, 99 and Appendix II, Standard 
Tables of the Principal Gaseous Lines and 
Bands, 99, Of Changes with Time and Use, 
100. On Recent Observations in Belgium, 103. 
On Professor A. S. Herscue’s Contribution of 
Appendix ITI., 104. 
Appendix I, Separate Tables of Observa- 
tions of each of 20 Gases, pp. 105- 
141. Appendix II. Tables of Gaseous 
Impurities, pp. 142-149, 
Socotra. See Dracena Cinnabari. 
Solubility of Chlorine in Water, and in Aqueous 
