306 
GENERAL INDEX 
exploration of, by F. W. Putnam, 1884, 
899 
Ohm standards, the value of the legal, H. 
T. Glazebrooh on, 1890, 101 
_ suggestions towards a determina¬ 
tion of the, by Prof. J. V. Jones, 1890, 
732 
Ohm’s law, Dr. A. Schuster on, 1874, 30 
-geometrical illustrations of, by Prof. 
G. C. Foster, 1874, 28 
-- report on, 1876, 36 
- in bad conductors, Prof. J. J. 
Thomson and H. F. Nemall on, 1886, 308 
- in electrolytes , Prof. G. F. Fitz¬ 
Gerald and F. T Trouton on the accu¬ 
racy of, 1886, 312 ; 1887, 345 ; 1888, 341 
Oil, the effect ot, in destroying waves on 
the surface of water, Prof. 0. Reynolds 
on, 1880, 489 
-the effect of, in calming waves in a 
storm, the probable explanation of, E. 
P. Culverwell on, 1883, 443 
-essential, of bay, and other aromatic 
oils, Dr. J. H. Gladstone on the, 1862, 
43 
*-pipe lines, the American system of, 
J. H. Harris on, 1885, 1193 
Oils, the action of, on metals, W. H. 
Watson on, 1880, 560 
-- essential, report on the chemical 
constitution and optical properties of, 
1872, 311 ; 1873, 214 ; 1874, 17 
-essential, J. W. Osborne on the, from 
the indigenous vegetation of Victoria, 
1862, 48 
-essential, C. T. Kingzett on the oxi¬ 
dation of the, 1875, 43 
-essential, Dr. J. E. De Vrij on the 
rotatory power of several, 1865, 40 
-fatty, J. Galletly on the ignition of 
cotton by saturation with, 1872, 73 
-manufacture of hydrocarbon, from 
peat, Dr. Paul on, 1862, 50 
—-— volatile, Sir D. Brewster on the 
motionand colours upon films of, 1867,8 
Old coast lines near Trondhjem, Norway, 
some results of a detailed survey of 
the, H. Miller on, 1885, 1033 
Old Hill district, Staffordshire, the drain¬ 
age of the, W B. Collis on, 1886, 825 
Old Red Sandstone of South Perthshire, 
Prof. Harkness on the, 1861, 114 
-of Caithness, C. W. Peach on fossil 
fishes from the, ls62, 85 
-of Scotland, &c , W. Pengelly on the 
correlation of the slates and limestones 
of Devon and Cornwall with the, 1S62, 
85 
-Upper, J. W. waiter on the identity 
of the, with the Uppermost Devonian, 
and of the Middle and Lower Old Red 
with the Middle and Lower Devonian, 
1862, 92 
-at Portishead, W. Hellier Baily on 
the occurrence of fish-remains in the, 
1864, 49 
Old Red Sandstone, C. W. Peach on fossil 
fishes of the, of Caithness and Suther¬ 
land, 1867, 72 
-of Kiltorcan Hill, co. Kilkenny, W. 
Hellier Baily on some fossils from the, 
1868, 58 ( see Report, 1869, 73 ) 
-J. W. Salter on a new Pterygotus 
from the Lower, 1868, 78 
-J. Miller on the so-called hyoid plate 
of the Asterolepis of the, 1871, 106 
-Lower, of Hay, Breconshire, the 
Rev. W. S. Symonds on a new fish-spine 
from the, 1871, no 
-- E. A. Wiinsch on the junction of 
granite and, at Corrie and Glen 
Sannox, Arran, 1876, 98 
-Conglomerate, an example of an 
early stage of metamorphic change in, 
Prof. J. Thomson on, 1882, 536 
Old Red Conglomerate, the occurrence of 
Lower, in the promontory of the Fanad, 
North Donegal, Prof. E. Hull on, 1885, 
1016 
*Oldham (Dr.) on the geology of India, 
1867, 72 ' 
- (James), second report on steam 
navigation at Hull, 1861, 239 
- report on tidal observations on the 
Humber, 1862, 101 ; 1864, 129 
*-on the utilisation or more profitable 
employment of male convicts, 1867, 144 
- on tidal observations, 1868, 489 ; 
1870, 120 ; 1871 , 203 ; 1872, 355 ; 1876, 
2 75 
- on agricultural machinery, 1869, 404 
^Olefines, Prof. M Simpson on the 
chlor bromides and brom-iodides of 
the, 1874, 67 
Oleic acid, the conversion of, into 
palmitic acid, and fusions with caustic 
alkalies at high temperatures, W. L. 
Carpenter on, 1883, 462 
Olfactory organ of certain fishes, the 
degeneration of the, Prof. Wieders- 
heim on, 1887, 736 
Oligocene strata in the Hampshire Basin, 
J. W. Elwes on the classification of 
the, 1882, 539 
Oligochmta, budding in the, Prof. A. G. 
Bourne on, 1885, 1096 
-contributions to the structure of 
the, by F. E. Beddard, 1885, 1102 
Oligochaste, a luminous, Prof. A. Harker 
on, 1887, 767 
*01igochmtous worms, E. Ray Lankester 
on, 1870, 120 
Oligoclase, three specimens of, from 
North Carolina, exhibiting curious 
optical properties, Dr. P. Frazer on, 
1888, 655 
Oliphant (Laurence), recent travels in 
trans-Jordanic Palestine, 1880, 659 
