338 
GENERAL INDEX. 
Protoplasmic life, F. Crace-Calvert on 
spontaneous generation or, 1871, 123 
Protoplasts, the intercellular connection 
of, Prof. W. Hillhouse on, 1883, 535 
Protopterus annectens, restoration of the 
tail in, Prof. R. H. Traquair on the, 
1871, 143 
__the torpid state of, Prof. Wieders- 
heim on, 1887, 738 
*Prout (Rev. G.), ascent of Um 
Shaumur, in the peninsula of Sinai, 
1862, 196 
Pryer (W. B.) on British North Borneo, 
1886, 733 
Psaronius, Prof. J. Hall on the occur¬ 
rence of trunks of, in an erect position, 
resting on their original bed, in rocks 
of Devonian age in the State of New 
York, 1872, 103 
Pseudophone, Prof. S. P. Thompson on 
the, 1879, 255 
Psychology, ethnic, R. Dunn on, 1873, 143 
-- experimental, a proposed society 
for, J. Jacobs on, 1885, 1230 
Pteraspis, E. R. Lankester on the species 
of the genus, 1864, 58 
--E. R. Lankester on the genus, 1864, 
100 
-E. Ray Lankester on the British 
species of, 1865, 65 
*Pterichthyidge, remarks on the zoologi¬ 
cal affinities of the, by Dr. R. H. 
Traquair, 1889, 638 
Pterodactyle, H. G. Seeley on the, as 
evidence of a new subclass of Verte- 
brata (Saurornia), 1864, 69 
*- H. G. Seeley on the relations 
between extinct and living reptiles, 
and the present state of our knowledge 
of, 1868, 78 
Pteroplax , James Thomson on new 
forms of, with notes on their structure 
by Prof. Young, 1869, 101 
Pteropoda dredged in the Shetland and 
adjacent seas, 1868, 246 
Pteryyotus , J. W. Salter on a new, from 
the Lower Old Red Sandstone, 1868, 78 
Ptolemaic geography and Ptolemaic 
maps, some points in connection with, 
Dr. Schlichter on, 1890, 897 
Public prosecutors in England, the cost 
of adopting the system of, as illustrated 
by the results of the Scotch and Irish 
systems, Dr. W. N. Hancock on, 1877, 
175 
.-thoroughfares, the purification of, 
by the application of deliquescent 
chlorides, W. J. Cooper on, 1870, 53 
*Pullan (Capt. A.), notes on British 
Gurhwal, 1871, 189 
Pulsations of a rotating bell, G. H. 
Bryan on the, 1890, 743 
Pulse, Dr. Francis E. Anstie on certain 
effects of alcohol on the, 1868, 111 
Pulse-rate, A. H. Garrod on the, and 
the forces which vary it, 1872, 151 
Pumice or volcanic dust, a tabular 
statement by C. Meldrum of the dates at 
which, and the localities where, was seen 
in the Indian Ocean in 1883-84, 1885, 
773 
*Pump, centrifugal, J. H. Gwynne on 
an improved, 1868, 192 
- filter-, T. E. Thorpe on an im¬ 
proved form of, 1872, 83 
Pumping engines, non-rotative, the ex¬ 
pansion of steam in, H. Davey on, 1880, 
697 
-machinery, E. D. Leavitt, jun. on, 
1884, 889 
Punishments, capital, and their influence 
on crime, Henry Ashworth on, 1861, 
203 
Punjab, the rivers of the, Gen. R. Mac- 
lagan on, 1885, 1129 
Purdie (Prof. T.) on the action of sodium 
alcoholates on fumario and maleic 
ethers, 1885, 972; on the chemical 
composition of the milk of the por¬ 
poise, 1072 
Purdy (Frederick) on the relative pau¬ 
perism of England, Scotland, and Ire¬ 
land, 1851-60, 1861, 231 
-on local taxation and real property, 
1862, 162; on the pauperism and 
mortality of Lancashire. 165 
--on the decrease of the agricultural 
population of England, 1851-61, 
1863, 156 ; on the mortality of Lanca¬ 
shire, &c., during the year ended at 
Midsummer 1863, 159 
——- report on the uniformity of weights 
and measures , 1864, 102 ; 1865, 375 
-on the quantity and value of foreign 
grain imported into the United 
Kingdom since the repeal of the Corn 
Laws, 1864, 171 
- on the pressure of taxation on real 
property, 1869, 57 
-- - on some experiments in agriculture, 
1869, 197 
Purity and impurity in the use and abuse 
of water, Major-Gen. Synge on, 1873, 
200 
■^Purser (Prof. F.) on bitangents to the 
surfaces of centres of a quadric, 1874, 
19 
-on the occurrence of equal roots in 
Lagrange’s determinantal equation of 
small oscillations, 1878, 463 ; on the 
geometrical treatment of bicircular 
quartics, 465 
*- (Prof. J.), remarks on Napier’s 
original method of logarithms, 1871, 23 
- on the source from which the 
kinetic energy is drawn that passes 
into heat in the movement of the 
tides, 1874, 22 
