300 
GENERAL INDEX. 
and fossils between the Borrowdaile 
series of the Coniston flags of the 
North of England, 1876, 90 
Nicholson [Prof. H. A.] and Prof. 
Harkxess on the Coniston group of 
the Lake district, 1867, 61 
-—- and C. Lapworth on the central 
group of the Silurian series of the 
North of England, 1875, 78 
-- (Prof. J. S.), one-pound notes, 
1886, 766 
-- on the best methods of ascertaining 
and measuring variations in the value 
of the monetary standard. 1887, 247 ; 
1888, 1 S 1 ; 1889, 133 ; 1890,485 
*-on bimetallism, 1887, 852 
- on the statistical data availaMe for 
determining the amount of the 'precious 
metals in use as money , fc., 1888, 219 ; 
1889, 164 : 1890, 498 
Nickel, Dr. A. T. Machattie on the pre¬ 
sence of, in metallic lead, 1861:, 34 
- and cobalt, some double compounds 
of, report on, 1877, 209 
Nicobar islanders, a brief account of the, 
with special reference to the inland 
tribe of Great Nicobar, by E. H. Man, 
1885, 1228 
-- islanders, the funeral rites and 
ceremonies of the, E. H. Man on, 
1888, 844 
Nicol (Prof. J.) on erratic blochs or 
boulders, 1873, 188 
-on Embollia IMachayi, a new fossil 
from the Assynt quartzite in the 
North-Western Highlands of Scotland, 
1S78, 545 
--(Dr. W. W. J.), a theory of solution, 
1884, 675 
- on vapour pressures and refractive 
indices of salt solutions, 1885, 284 ; 
1886, 204 
-water of crystallisation, 1886, 578 
- on the 'nature of solution, 1887, 55 ; 
1888, 93 ; on the bibliography of solu¬ 
tion, 1887, 57 ; 1888, 54 ; 1889, 53 ; 
1890, 310 
-on the thermal phenomena of neu¬ 
tralisation and their bearing on the 
nature of solution, 1887,656; *descrip- 
tion of a shortened self-acting Sprengel 
pump, 669 
~-a new gas analysis apparatus, 1888, 
632 
.- on the properties of solutions , 1889, 
53; 1890,310 
Nicol prism, a simple modification of the, 
giving wider angle of field, Prof. S. P. 
Thompson on, 1885, 912 ( see 1881, 563 ) 
fNicol’s prisms, W. Ladd on the con¬ 
struction of large, 1874, 26 
Nicolay (Rev. C. G.) on the geology 
of the Chapada Diamantina in the 
province of Bahia, Brazil, 1868, 74 
Niger, the upper waters of the, W. W. 
Reade on a journey to, 1870, 175 
* - A. Bowden on a new route to the 
sources of the, 1876, 181 
f- and Central Sudan sketches, J. 
Thomson on, 1886, 736 
^Nightingale, the distribution of the, in 
Yorkshire, J. Lister on, 1887, 770 
Nightingale (Miss) on native colonial 
schools and hospitals, from the sanitary 
statistics of the Aborigines of British 
colonies, 1863, J 55 
Nile, Dr. Beke on the mountains forming 
the eastern side of the basin of the. 
1861, 184 
-- *Baron von Heuglin on his explo¬ 
ration of certain affluents of the, 1863, 
138 ; J. A. Grant on the discovery of 
the sources of the, 137 ; Signor Miani 
on his travels towards the sources of 
the, 143 
-Dr. Beke on the possibility of turn¬ 
ing the waters of the, into the Red 
Sea, 1866, 105 
- Sir W. S. Baker on the relations of 
the Abyssinian tributaries of the, and 
the equatorial lakes to the inunda¬ 
tions of Egypt, 1866, 102 
- White, letter from Sir S. Baker 
from the, 1870, 166 (see 1865, 112 ) 
* -the Upper, expedition from the 
Lake Tchad to, Dr. G. Nachtigall on 
an, 1875, 195 
* -journey towards the outlet of the, 
from the Lake Albert Nyanza, Lieut. 
W. H. Chippindall on a, 1875, 190 
—— White, between Gondokoro and 
Appuddo, observations on the, bv Lieut. 
W. H. Chippindall, 1876, 182 
-country between the, and the Red 
Sea, E. A. Floyer on the, 1887, 801 
-the region from the, to the Euphra¬ 
tes, notes on the geography of, as 
known to the ancient Egyptians, by 
Rev. H. G. Tomkins, 1888, 741 ; re¬ 
marks thereon by Major Conder, 743 
■-flood, the Raiyan project for the stor¬ 
age of, Cope Whitehouse on, 1888, 799 
* - the Upper, geographical co-ordi¬ 
nates in the Valley of, E. G. Raven- 
stein on, 1889, 668 
‘ Nitikin, Travels beyond Three Seas, by 
Athanasius,’ E. Delmar Morgan on, 
1874, 177 
^Nitrates in soil, R. Warington on the, 
1883, 469 
- the reduction of, by micro-organ¬ 
isms, R. Warington on, 1887, 653 
Nitric acid, Dugald Campbell on the 
action of, upon pyrophosphate of mag¬ 
nesia, 1862, 37 
- acid, P. Braham and J. W. Gate¬ 
house on the dissociation of, by various 
means, 1874, 55 
