318 
GENERAL INDEX. 
Pengelly (W.) on the prehistoric in¬ 
habitants of the British Islands , 1887, 
168 ; 1888 , 289 ; 1889, 318 ; 1890,348 
-recent researches in Bench Cavern, 
Brixham, Devon, 1887, 710 
-—— on the nomad tribes of Asia Minor 
and Northern Persia, 1889, 176 ; 1890, 
535 
Penine, see Pennine 
Penn (John) on steam-boiler explosions, 
1869, 47 ; 1870, 1 ; 1871, 166 ; 1872, 57 
Pennant (P. P.) on the caves of North 
Wales, 1886, 219 ; 1887, 301 
Pennine chain, the age of the, E. Wilson 
on, 1879, 343 
-chain, some vestiges of the ancient 
forest of part of the, J. Lucas on, 1881, 
680 
-fault, W. Bainbridge on the, in con¬ 
nection with the volcanic rocks at the 
foot of Crossfell, 1863, 64 
Pennsylvania before and after the eleva¬ 
tion of the Appalachian Mountains, 
Prof. E. W. Claypole on, 1884, 718 
-some examples of pressure-fluxion 
in, Prof. H. C. Lewis on, 1885, 1029 
Penrith sandstone, further discovery of 
vertebrate footprints in the, G. V. 
Smith on, 1883, 510 
Penrose (F. G.), report on the occupa¬ 
tion of the table at the Zoological Sta¬ 
tion at Naples, 1881, 183 
Pension fund, a national. Rev. W. M. 
Ede on, 1889, 715 
Pentacrinus (P. Wyville-Thomson!), from 
the coasts of Spain and Portugal, J. 
Gwyn Jeffreys on a, 1870, 119 
*Pentastoma, Prof. A. Macalister on two 
new species of, 1874, 137 
Pentland Hills and Lesmahago, D. J. 
Brown on the Upper Silurian rocks of 
the, 1871, 93 ; J. Henderson on the age 
of the felstones and conglomerates of 
the, 101 
^People, F. J. Wilson on classification 
of the various occupations of the, 1866, 
Peppermint-camphor (menthol) and some 
of its derivatives, Prof. R. W. Atkinson 
and H. Yoshida on, 1881, 585 
‘"Pera, Southern, W. Bollaert on ancient 
engravings on stone from, 1866, 96 
Peradeniya, Ceylon, report on the steps 
taken for establishing a botanical sta¬ 
tion at, 1887, 96 ; 1888, 421 ; 1889, 
114 ; 1890, 470 
-*Perak and Salangore, W. D’Almeida on, 
1876, 182 
Perambulator and street railway, John 
Haworth on a, 1861, 258 
Perceval (C. H. S.) on a rare species of 
fungus found in Surrey, 1875, 158 
Perchloric acid and its hydrates, Prof. 
Roscoe on, 1861, 91 
Perchloric acid, T. Fairley on, 1874, 58 
Percival (Lovibond) on the formation 
of pyrites in a South Staffordshire 
coal-pit, 1865, 71 
Perdix cinerea found in Devonshire, Dr. 
W. R. Scott on a hybrid or other 
variety of, 1869, 117 
^Pericardial fluid, Dr. M. Foster on the, 
1865, 191 
Periodates, T. Fairley on a new method 
of preparing, with application as a 
test for iodine and sodium, 1875, 42 
Periodic functions, singly and doubly, 
the general analogy between the 
formulas of, J. W. L. Glaisher on, 1881, 
548 
-law, the, as illustrated by certain 
physical properties of organic com¬ 
pounds, Prof. T. Carnelley on, 1885, 969 
-law, suggestions as to the cause of 
the, and the nature of the chemical ele¬ 
ments, Prof. T. Carnelley on, 1885, 
969 
-law, Prof. T. Carnelley and Miss E. 
Johnston on the antiseptic proper¬ 
ties of metallic salts in relation to their 
chemical composition, and the, 1887, 
667 
Periodicity of commercial crises, the, 
and its physical explanation, Prof. W. 
S. Jevons on, 1878, 666 
*Periophthalmus, the caudal respiration 
of, Prof. A. C. Haddon on, 1889, 635 
*Peripatus, A. Sedgwick on, 1883, 543 
-a forgotten species of, Prof. F. J. 
Bell on, 1887, 769 
Perkin ( 1 \. H.) on chloride of methvlene 
obtained from chloroform by means of 
nascent hydrogen, 1868 , 40; on the 
preparation of some anhydrous sodium 
derivatives of the salicylic series, 41 
* -on artificial alizarine, 1870, 61 
- Address to the Chemical Section, 
1876, 55 ; on some new anthracene 
compounds, 67 
-on the magnetic rotation of com¬ 
pounds in relation to their chemical 
composition, 1884, 673 ; *on coal tar 
colouring matters, 678 
-on the magnetic rotation of mix¬ 
tures of water, and some of the acids 
of the fatty series with alcohol and 
with sulphuric acid, and observations 
on water of crystallisation, 1886, 579 
-the development of the coal-tar 
colour industry since 1882, 1890, 775 
-and Dr. J. H. Gladstone on the 
correspondence between the molecular 
refraction, dispersion, and magnetic 
rotation of carbon compounds, 1S89, 
515 
* -(Prof. W. H., jun.) on the consti¬ 
tution of the alkaloid, berberin, 1890 . 
785 
