930 
I^TDEX. 
0 . 
Operculina, 12. 
Organo-metallic bodies, 401, 417 (see Fkank.lan'D, Btjckton). 
Owen (Professor). Description of some remains of a Gigantic Land-lizard {Megalania prisca, Owen) 
from Australia, 43. ’ 
. ___ On the Vertebral Characters of the Order Pterosauria as exemplified in the Genera 
Pterodactylus and Dim.orphoclon, 16L-~Atlas and axis vertebrse of the Pterodactyle, 165. 
On the Fossil Mammals of Australia. —Part L Description of a mutilated SkuR 
of a large Marsupial Carnivore {Thjiacoleo carnifex, Owen), from a calcareous conglomerate 
stratum eighty miles S.W. of Melbourne, Victoria, 309. 
^ On the Megatherium.— Part V. Bones of the Posterior E.xtremities, 809.— Phy- 
siological summary, 823. 
P. 
Peneroplis, 2. 
Photo- chemical researches, 879 (see Bunsen). 
Pole (W.). On Colour-blindness, 328. 
Pollock (Sir Frederick). On some Remarkable Relations which obtain among the Roots of the Four 
Squares into which a Number may be divided, as compared with the corresponding Roots of certain 
other Numbers, 49. 
Pratt (Archdeacon J. H.). On the Defieetion of the Plumb-line in India, caused by the Attraction of 
the Himmalaya Mountains and of the elevated regions beyond ; and its modification by the com- 
pensating effect of a Deficiency of Matter below the Mountain Mass, 745 (for Contents, see p. 745). 
Postscript on Himmalayan Attraction, 774. 
. Qjj Influence of the Ocean on the Plumb-line in India, 779. 
Pseudova of insects, 341 j their development, 358. 
Pterosauria, vertebral characters of the order, 161. 
Q. 
Quantics, 61 (see Cayley). 
R. 
Rankine {W. J. Macquorn). On the Thermo-dynamic Theory of Steam-engines with diy saturated 
Steam, and its application to practice, 177.— Introduction, 177; summary of previously known 
principles and formula, 178; theory of the work, heat, and efficiency of dry'saturated steam, 184; 
approximate formulse, 187; comparison of theory with experiment, 189. 
, Supplement to a paper “ On the Thermo-dynamic Theory of Steam- 
engines with dry saturated Steam, and its application to practice,'’' 743. 
Respiration, chemical and other phenomena of, 681 ; efl’ect of foods on, 715 (see Smith). 
Roscoe (Dr. H. E.). See Bunsen. 
S. 
Sea-level, change of, produced by attraction of mountains, &c., 792. 
