216 
GENERAL INDEX 
Hypnum Bambergeri, a new British 
moss, Dr. John Fraser on, 1868, 96 
Hypobromous acid, Prof. H. E. Roscoe 
on, 1862, 54 
Hypochlorous acid, chlorine, &c., and 
peroxide of hydrogen, T. Fairley on, 
1874, 57 
*IIypocycloid, three-cusped, a geometrical 
theorem in connection with the, by 
R. F. Davis, 1884, 649 
Hypogeum, A. A. Carmichael on a, at 
Valaquie, North Uist, 1872, 176 
--J. F. Campbell on a visit to the, 
1872, 175 
*Hypolais icterina, British specimens 
exhibited by H. E. Dresser, 1872, 136 
Hvponasty and epinasty, Prof. S. H. 
Vines on, 1889, 645 
Hypsometry, Alexander J. Ellis on prac¬ 
tical, 1866, 1 
*Hyrtl (Prof.) on nerves without ends, 
1861, 167 ; *on the pneumatic processes 
of the occipital bone, ib. ; *on portions 
of lungs without blood-vessels, ib. 
Hysteresis, magnetic, Prof. G. Forbes on, 
1886, 550 
--- in the relation of strain to stress, 
Prof. J. A. Ewing on, 1889, 502 
Iberian population of Asia Minor ante¬ 
rior to the Greeks, Hyde Clarke on the, 
1864, 140 
Iberians, Dr. Beddoe on the, 1873, 140 
- in Europe, W. B. Dawkins on the 
northern range of the. 1873, 142 
- Pelasgians, and Etruscans: their 
relations to the founders of the Chal¬ 
dean and Egyptian civilisations, J. S. 
S. Glennie on, 1888, 857 
^Ibrahim Khan, a journey from Yassin 
to Yarkand, 1871, 180 
Tee as an agent of geologic change , report 
on , 1869, 171 
-the action of, in what is usually 
termed the Glacial period, Rev. j. 
Brodie on, 1875, 63 
-—•— action, existing, in Greenland and 
the Alps, compared with former ice 
action in the N.W. of England and 
Wales, queries and remarks relative 
to, by D. Mackintosh, 1875, 76 
• -in the North Sea during the Glacial 
period, further evidence of the exten¬ 
sion of the, by B. N. Peach and J. 
Horne, 1885, 1036 
--Rev. G. F. Browne on the prismatic 
formation of, in certain ice-caves and 
glaciers, 1864, 24 , *52 
-- frasil, the formation of, G. H. Hen- 
shaw on, 1884, 644 
• -melting, the temperature of the in¬ 
terior of a block of, J. B. Francis on, 
1884, 657 
lee age theories, Rev. E. Hill on, 1884, 
723 
Icebergs, J. Gunn on the influx and 
stranding of, during the so-called 
Glacial epoch, and a suggestion of the 
possible cause of the oscillation of the 
level of land and water to which that 
influx may be due, 1875, 66 
Iceland and New Zealand, the hot springs- 
of, C. E. Peek on, 1883, 590 
Icerya purchasi, an insect injurious to* 
fruit trees, Prof. Riley on, 1887, 767 
Ichthyosauri , C. Moore on two, 1861,. 
121 
Ichthyosauria, the neural arch of the 
vertebras in the, Prof. H. G. Seeley on. 
1890, 809 
Ichthyosaurus from the Lias of England 
and Wurtemberg , report on the mode of 
reproduction of certain species of 1880, 
68 
-the hind limb of the, Prof. D’A. W. 
Thompson on, and on the morphology 
of vertebrate appendages, 1885, 1065 
- an, from Mombasa, East Africa. 
Prof. H. G. Seeley on, with observa¬ 
tions on the vertebral characters of 
the genus, 1888, 677 
Igneous rocks of South Staffordshire, 
David Forbes on the, 1865, 53 
- rocks, the, of the neighbourhood 
surrounding the Warwickshire coal¬ 
field. F. Rutley on, 1886, 625 
-of Llyn Padarn, Yr Eifl, and Boduan. 
Prof. J. F. Blake on, 1886, 669 
- succession in Shropshire, W. W, 
Watts on an, 1888, 685 
Ignition of explosive gaseous mixtures. 
Dr. G. S. Turpin on the, 1890, 776 
Iguanodon, Rev. W. Fox on the skull and 
bones of an, 1868, 64 
*—— W. W. Hawkins on a pair of sym¬ 
metrical bones present with the fossil 
remains of, 1874, 141 
- the reputed clavicles and inter- 
clavicles of, Prof. H. G. Seeley on, 
1887, 698 
Iliac divarication, alteration of, and other 
changes of pelvic forms during growth. 
Prof. Cleland on, 1887, 754 
Illegitimacy of Banffshire, George Seton 
on the, 1871. 214 
Illuminating powers of incandescent 
vacuum lamps with measured poten¬ 
tials and measured currents, Prof. Sir 
W. Thomson and J. T. Bottomley on* 
the, 1881, 559 
Illuminative value of a mixture of hy¬ 
drogen with some hydrocarbons, A. V. 
Harcourt on the, 1879, 319 
*Image, a soapstone, from Pekin, exhi¬ 
bition and description of, by Rev. Prof. 
Beal. 1877, 115 
Immersion method of illumination of the 
