INDEX. 
817 
L. 
Leptosiagon, 785. 
Lockyer (J. N.). The Bakerian Lecture. — Researches in Spectrum-Analysis in connexion with the 
Spectrum of the Sun. — No. III., 479. — Introduction, 479 ; the experiments made on a possible 
quantitative spectrum -analysis, 481 ; the method of photographing spectra, 484 ; on the coincidences 
of spectral lines, 487 ; preliminary inquiry into the existence in the sun of elements not previously 
traced, 490 ; explanation of the plates, 494. 
Researches in Spectrum-Analysis in connexion with the Spectrum of the Sun. — 
No. IV., 805. 
Lockyer (J. N.) and Roberts (W. C.). On the Quantitative Analysis of certain Alloys by means of 
the Spectroscope, 495. 
M. 
Macrupodidce, 245, 783 (see Owen) . . 
Macropus, 245, 783. 
Moseley (II. N.). On the Anatomy and Histology of the Land-Planarians of Ceylon, with some 
account of their Habits, and a Description of two new Species, and with Notes on the Anatomy of 
some European Aquatic Species, 105. — Preface, 105 ; Dendrocoela, 106; habits of land-planarians, 
111; methods of investigation, 116 ; anatomy, 117; summary, 146; description of plates, 150. 
On the Structure and Development of Peripatus capensis, 757. — Introduction, 757 ; 
literature, 757 ; habits, 759; anatomy, 761; conclusion, 775; explanation of the plates, 778. 
0 . 
Osphranter, 261. 
Owen (R.). On the Fossil Mammals of Australia. — Part VIII. Family MACROPODimE : Genera 
Macropus, Osphranter, Phascolagus, Sthenurus, and Protemnodon, 245. — Introduction, 245 ; 
Macropus, 245 ; Osphranter, 261 ; Phascolagus, 261 ; Sthenurus, 265 ; Protemnodon, 274 ; 
description of the plates, 282. 
On the Fossil Mammals of Australia. — Part IX. Family Macropodidab : Genera Macropus, 
Pachysiagon, Leptosiagon, Procoptodon, and Palorchestes, 783. — Macropus, 783 ; Pachysiagon, 784 ; 
Leptosiagon, 785; Procoptodon, 786; Palorchestes, 797 ; description of the plates, 801. 
Ozone, formation of, from carbonic acid gas, 84; analogy of, to chlorine, 103. 
P. 
Pachysiagon, 784. 
Palorchestes, 797. 
Parker (W. K.). On the Structure and Development of the Skull in the Pig ( Sus scrofa ), 289. 
Peripatus capensis, 75 7. 
Phascolagus, 261. 
Pig, development of the skull in the, 289. 
Planarians, land-, of Ceylon, 105 (see Moseley). 
Procoptodon, 786. > y ' 
Protemnodon, 274. 
R. 
Radiation, attraction and repulsion arising from, 501. 
Reversal of lines in solar spectrum, 807. 
Rigid body, dynamics of a, 15. 
