GENERAL INDEX. 
353 
Ricketts (Dr. C.) on a probable cause of 
contortions of strata, 1888, 684 
Riddell (Dr. R.) on balatta and other 
gums as a substitute for gutta percha, 
1864, 87 
Ridewood (W. G ) on the occupation of 
the table at the laboratory of the 
Marine Biological Association at Ply¬ 
mouth, , 1890, 446 ; on the air-bladder 
of clupeoid fishes, ib. 
Ridley (H. N.) and C. Reid, fossil 
Arctic plants from the lacustrine de¬ 
posit at Hoxne, in Suffolk, 1888, 674 
Ritie barrels, recent improvements in the 
manufacture of, A. Greenwood on, 
1866, 821 
Rifled fire-arms, T. Aston on elongated 
projectiles for, 1861, 253 
- ordnance, G. Richardson, 1863, 182 
Rifles, the Martini-Henry and Westley- 
Richards, W. P. Marshall on, 1870, 221 
^Rifling, Woolwich system of, estimation 
of the error in the flight of heavy pro¬ 
jectiles due to the, by W. Hope, 1872, 
246 
Rigby (Samuel) on steam-boiler explo¬ 
sions, 1869, 47 ; 1870, 1 ; 1871, 166 ; 
1872, 57 
*Rigg (A.) on the flow of water through 
turbines and screw-propellers, 1884, 
895 
-on a new high-speed steam or hy¬ 
draulic engine, 1886, 808 ; 1887, 871 
-(E ) on the determination of a gauge 
for the manufacture of various small 
screws , 1882, 311 ; 1883, 318 ; 1884, 287 
-on the British Association standard 
gauge for small screws, 1885, 1203 
Right of property in trees on another’s 
land, as an origin of rights of property, 
Hyde Clarke on the, 1889, 783 
* Right-handedness, J. Shaw on, 1876, 169 
Rigid body, theory of the geometrical 
freedom of a, Prof. Ball on a model of 
a conoidal cubic surface called the 
1 cylindroid,’ w T hich is presented in the, 
1871, 8 
Rigidity of the earth, a numerical esti¬ 
mate of the, by G. H. Darwin, 1882, 
472 
- of glass, brass, and steel, J. D. 
Everett on the, 1867, 153 
—— resume of experiments on, by Prof. 
J. D. Everett, 1868, 8 
Rigor mortis not muscular contraction, 
Dr. R. Norris on, 1865, 109 
Riley (Dr. C. V.), the problem of the hop- 
plant louse {Phorodon humuli, Schrank) 
in Europe and America, 1887, 750 ; 
on the luminous larviform females in 
the Phengodini, 760 ; on Icerya pur- 
chasi, an insect injurious to fruit trees, 
767 
-- note on the importation and coloni¬ 
sation of parasites and other natural 
enemies of insects injurious to vegeta¬ 
tion, 1889, 640 
Riley (E.) on titanium in iron, 1863, 55 
- on the best method of establishing 
an international standard for the 
analysis of iron and steel, 1889, 50 ; 
1890, 262 
Rilliet (A.) and Prof. J. M. Crafts on 
the decomposition by heat of chlorate 
of potassium, 1882, 493 
Rtnk (Dr. H.) on the interior of Green¬ 
land : the principal points of geogra¬ 
phical interest connected with it, and 
the recent expeditions for its explora¬ 
tion, 1879, 452 
*Rio de la Plata, Consul T. J. Hutchinson 
on the rivers and territories of the, 
1868, 137 
*Rio solimoes or Upper Amazon in Brazil, 
notes on the large southern tributaries 
of the, with special reference to the 
Rio Jutahi, by Prof. J. W. H. Trail, 
1885, 1138 
Ripening of the seeds, Dr. J. B. Nevins 
on the changes which occur in plants 
during the, 1871, 130 
Ripper (W.), technical instruction in 
elementary schools, 1886, 749 
Risley (H. H.), the study of ethnology 
in India, 1889, 785 
- on the natives of India , 1890, 547 
‘ River basin,’ D. Mackintosh on the geo¬ 
logical meaning of the term, and the 
desirability of substituting ‘ drainage- 
area,’ 1875, 75 
-bifurcate, in Perthshire, Capt. T. P. 
White on a, 1869, 172 
-control, J. C. Hawkshaw on, 1878, 
687 
-floods, the effect of river or arterial 
drainage works upon, J. Dillon on, 
1878, 687 
-entrances, Dr. H. R. Mill on, 1886, 
731 
- of Joseph, the Fayum and Raian 
basins, Cope Whitehouse on the, 1888, 
746 
-names and populations of Hibernia, 
and their relation to the Old World 
and America, Hyde Clarke on the, 
1874, 146 
-systems of South India, Gen. F. H. 
Rundall on the, 1886, 734 
-volumes and flood levels, records of, 
C. E. De Ranee on, 1889, 748 
* -worms, new British, Prof. E. Ray 
Lankester on, 1883, 541 
Rivers, the control of, W. Shelford on,. 
1878, 690 
• -deepening and improvement of, W. 
H. Wheeler on the application of the. 
transporting power of water to the^ 
1889, 754 
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