332 
GENERAL INDEX. 
Porter (C. T.) on Richards’s indicator 
for steam-engines, 1863, 178 
- (H. J. Ker) on farm labourers’ 
cottages, 1861, 230 
-—— on the prevalence of ‘ Spedalske ’ or 
leprosy in the kingdom of Norway, 
1867, 144 
-on the extension of the Contagious 
Diseases Act, 1868, 175 
-(Rev. J. L.) on a recent journey east 
of the Jordan, 1874, 179 
- [Prof. J. L.] on some points of in¬ 
terest in the physical conformation and 
antiquities of the Jordan Valley, 1876, 
184 
Portishead, W. Hellier Baily on the oc¬ 
currence of fish-remains in the Old Red 
Sandstone at, 1864, 49 
-Dock, F. C. Stileman on, 1875, 252 
Portland, the modern and ancient beaches 
of, W. Pengelly on, 1870, 83 
- cement, improvements in the 
manufacture of, F. Ransome on, 1887, 
864 
——sands of Swindon and elsewhere, 
H. B. Woodward on the, 1888, 652 
*Portrush electric railway, Dr. A. Traill 
on the, 1884, 893 
Portstewart, additional remarks on the 
finding of Prehistoric objects at, by W. 
J. Knowles, 1876, 166 
- excavations at, and elsewhere in the 
North of Ireland, report on, 1879, 171 
^Portuguese expedition in West Central 
Africa., results of the, Capt. H. Capello 
and Lieut. IL Ivens on the, 1880, 659 
- explorations in Austral Africa 
during the nineteenth century, J. 
Batalha-Reis on, 1889, 663 
*——- possessions in West Africa, H. H. 
Johnston on the, 1885, 1132 
Post Office Savings Bank system of 
Canada, J. C. Stewart on the, 1884,834 
--- Savings Banks, progress of, W. 
Chetwynd on the, 1864, 163 
- Savings Banks, statistics of the, 
Alfred Hill on the, 1865, 152 
Postal reform, W. Hastings on, *1873, 
191 ; 1874, 209 
*Poste photographique, Abbe Moigno on 
the, 1871, 44 , 76 
Post-glacial structure of Norfolk and 
Suffolk, S. V. Wood, jun., and F. W. 
Harmer on the Glacial and, 1868, So 
-deposits in West Lancashire, note on 
the correlation of certain, by C. E. De 
Ranee, 1877, 68 
Post-miocene deposits of the Bovey 
Basin, South Devon, W. Pengelly on 
the, 1882, 532 
Post-pliocene deposits of Canada, Prin¬ 
cipal J. W. Dawson on fossil plants of 
the, 1865, 50 
Post-tertiary and more Recent deposits of 
Kashmir and the Upper Indus Valley, 
Lieut.-Col. H. H. Godwin-Austen on 
the, 1880, 589 
Potash, manufacture of the prussiate of, 
John Lee and Thomas Richardson on 
the, 1863, 51 
- prussiate of, the manufacture of, 
Dr. J. B. Readman on, 1889, 535 
- and phosphoric acid in commercial 
products, report on the methods em¬ 
ployed in the estimation of, and on the 
mode of stating the results, 1875, 24 ; 
1877, 9 , 26 
Potassium chlorate, the decomposition 
of, by heat, A. Rilliet and Prof. J. M. 
Crafts on, 1882, 493 
* - chlorate, the explosive character 
of a mixture of magnesium and, P. 
Braham on, 1877, 51 
* -— dichromate, T. Fairley on the use 
of, in Grove’s and Bunsen's batteries to 
insure constancy, 1875, 42 
Potato-disease, J. Torbitt on the, 1874, 
134 
Potential due to contact, S. L. Hart on, 
1881, 555 
——- a method of multiplying, from a 
hundred to several thousand volts, 
Prof. Sir W. Thomson on, 1885, 907 
Potter (Edmund) on co-operation and 
its tendencies, 1861, 230 
-(M. C.), *the protection of buds 
against the sun, 1889, 648 ; *the 
biology of Erythrina lithosperma , ih. 
*Potters, J. T. Arlidge on the duration 
of life, the prevailing diseases, and the 
causes of death of, 1865, *35 
Pouchet (G.) on the mechanism of the 
change of colour in fishes and Crus¬ 
tacea, 1872, 153 
Poulton (E. B.), a preliminary account 
of the working of Dowkerbottom 
Cave, in Craven, during August, 1881, 
1881, 622 
- on heredity in cats with an ab¬ 
normal number of toes, 1883, 543 ; 
1886, 692 ; *1888, 707 
-on the artificial production of a 
gilded appearance in certain lepi- 
dopterous pupae, 1886, 692 ; some expe¬ 
riments upon the protection of insects 
from their enemies by means of an un¬ 
pleasant taste or smell, 694 
-further experiments upon the 
colour-relation between phytophagous 
larvae and their surroundings, 1887, 756 ; 
further experiments upon the protec¬ 
tive value of colour and markings in 
insects, 763 ; the secretion of pure 
aqueous formic acid by lepidopterous 
larvae for the purpose of defence, 765 
-discussion on coral reefs, 1888, 722 
* - on the supposed transmission of 
acquired characters, 1889, 620 
