812 
INDEX. 
P. 
Page (F. J. M.) and Dupre (A.) (see Dupre). 
Palceocoryne, 693 (see Duncan). 
Parker (W. K.). On the Structure and Development of the Skull of the Common Fowl, 755. 
Parkeria, description of, 724. 
Pezophaps solitaria, 327 (see Newton). 
Plants, living, excretion of carbonic acid by, 615. 
Prominences, solar, 425 (see Lockyer). 
R. 
Reciprocal surfaces, 201, 240. 
Resistance, thermal, of liquids, 637. 
Robinson (T. R.) and Grubb (T.). Description of the Great Melbourne Telescope, 127. 
Rodriguez, didine bird of, 327. 
Roscoe (H. E.). Researches on Vanadium. — Part II., 679 ; mononitride, 679; chlorides, 680; me- 
tallic vanadium, 687. 
S. 
Scrolls, 111 (see Cayley). 
Singularities, new, of surfaces, 206. 
Skull of common fowl, development of, 755. 
Solitaire, 327 (see Newton). 
Specific heat of mixtures, 591 (see Dupre). 
Sponges from deep sea, 701 (see Thomson). 
Stewart, (B., &c.). Sun-spots, 1 (see De La Rue). 
Sun, spectroscopic observations of the, 425. 
Sun-spots, 1 (seeDE La Rue). 
Surfaces, reciprocal, 201 ; cubic, 231. 
, skew, 111 (see Cayley). 
T. 
Telescope, great Melbourne, 127. 
Thomson (W.). On Holtenia, a Genus of Vitreous Sponges, 701. 
Tonge (M.). Observations on the Development of the Semilunar Valves of the Aorta and Pulmonary 
Artery of the Heart of the Chick, 387. 
Transparency of glass, 157. 
Turacin, 627 (see Church). 
V. 
Vanadium, 679 (see Roscoe). 
W. 
Whymper, fossil plants collected by Mr., described, 445. 
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