INDEX II, 
Pim (Captain Bedford) on an inter- 
oceanic and international transit-route 
through Central America, 143 ; on his 
projected transit-route through Cen- 
tral America, by E. Salmon, 183. 
Planetary configurations, B. Stewart on 
oa ara and their connexion with, 
Planets, R. 8. Browne on the relative 
distances of the, from the sun, 5. 
Plant-house, description of a new, by 
T. Bewley, 95. 
Plants and gases, R. Garner on the reci- 
procal action between, 118. 
ae (Prof.) on spectral analysis, 
5 
Pole (Prof. W.), description of the large 
oscope used by Sir W. Armstrong 
in his investigations on rifled projec- 
tiles, 177. 
Polynomials, J. J. Walker on the con- 
ditions of the resolvability of homo- 
geneous algebraical, into factors, 3. 
Polyzoa, Joshua Alder on new British, 
97. 
Poor-law, Dr. Hancock on the difference 
between the Irish and English, 153. 
Porter(C. T.) on Richards’s indicator for 
steam-engines, 178. 
Potash, John Lee and Thomas Richard- 
son on the manufacture of the prus- 
siate of, 51. 
Printing-telegraph, Bonelli’s, W. Cook 
on, 18; D. E. Hughes on a, 18. 
Prisms, H. Swan on a new kind of mi- 
niature, possessing apparent solidity 
by means of a combination of, 17. 
Proctor (Barnard S.) on the focal ad- 
justment of the eye, 16. 
"Proctor (Rey, J. L.) on the Marganza, 
Purdy (Frederick) on the decrease of 
the agricultural population of Eng- 
land, 1851-61, 156; on the mortality 
of Lancashire, &c., during the year 
ended at midsummer 1863, 159. 
*Puseley (D.) on Thompson’s universal 
stopper for bottles, 180. 
Pyenogonoidea, list of the British, by 
George Hodge, 102. 
Pyrites, J. Pattinson on the various 
kinds of, used on the Tyne and neigh- 
bourhood in the manufacture of sul- 
phuric acid, 49. 
Pyrites-burners, W. Crookes on the ex- 
traction of thallium on a large scale 
from the flue-dust of, 41. 
Quartzites, Alexander Bryson on artifi- 
cially produced, 67. 
207 
Races, R. Lee on the extinction of, 140. 
Railway, W. Fallows on the origin of 
the Stockton and Darlington, 153. 
Railways, W. Smith on animproved valve 
and apparatus for eee: eric, 188. 
Rain-gauges erected at Calne, G. J. Sy- 
mons on the experimental series of, 
26. 
*Rankin (Rev. Thomas), meteorologi- 
cal observations recorded at Huggate, 
Yorkshire, 25. 
Rankine (Prof. W. J. M.), his address 
as president of Section A, 1; an inves- 
tigation on plane water-lines, 180. 
Reali (T. A.) on the recent disco- 
very of gold near Bala lake, Merio- 
nethshire, 86. 
Refraction, atmospheric, Stephen Alex- 
ander on the augmentation of the ap- 
parent diameter of a body by its, 3. 
Richards (G.) on rifled ordnance, 182. 
Richards’s indicator for steam-engines, 
C. T. Porter on, 178. 
Richardson (Thomas) on the manufac- 
ture of the prussiate of potash, 51; 
on the separation of lead and anti- 
mony, 52; on the use of fuel in ma- 
rine boilers, 53; analysis of a deposit 
from a colliery water containing sul- 
phate of baryta, 54. 
Richardson ea . H.) on the paper-manu- 
factures of Northumberland and Dur- 
ham, 183. 
Richter (Dr. Otto) on the chemical and 
physical principles in connexion with 
the specific gravity of liquid and solid 
substances, 54. 
Rifled ordnance, G. Richards on, 182. 
Riley (Dr.) on titanium in iron, 59. 
Riveting, W. Smith on portable ma- 
chinery for, invented by J. M‘Farlane 
Gray, 184. 
Roberts (G. E.) on some remains of 
Bothriolepis, 87; on the discovery of 
elephant and other mammalian re- 
mains in Oxfordshire, 87; on the 
opening of a cist of the Stone age near 
the coast of the Moray Firth, 146. 
Robins (Thomas), observations on cri- 
minals, 166. 
Robinson (Dr. G.) on the practicability 
of arresting the development of epi- 
demic disease by the internal use of 
antizymotic agents, 119; on the na- 
i and varieties of organic effluvia, 
120. 
*Robinson (J.) on an improved manu- 
facture of biscuits, 183. 
Rocks, Dr. Harvey B. Holl on the meta- 
morphic, of the Malvern Hills, 70, 
