122 
GENERAL INDEX. 
Durand (Dr. T. P.) on the comparative 
osteology of the arm, 1879, 405 
Durdham Down deposit, yielding Tlieco- 
dontosaurus, &c., C. Moore on the age 
of the, 1875, 77 
Durham, John Daglish on the Magnesian 
Limestone of , 1863, 726 
- report by G. S. Brady on deep-sea 
dredging on the coast of, 1863, 189 
- and Northumberland, manufacture 
of lead, copper, zinc, £>'c., in, 1863, 715 
- coal-field of, Nicholas Wood and 
Edward F. Boyd on ‘ the Wash,’ a re¬ 
markable denudation through a portion 
of the, 1863, 89 
f-coal-field, the extension of the, 
Prof. G-. A. Lebour and J. Marlev on, 
1889, 580 
--—- Dr. Wilson on the habits and diseases 
of the coal-miners of, 1863, 126 
- list of phasnogamous plants dis¬ 
covered in the S.E. of, since 1829, by 
John Hogg, 1863, 96 
-- and Northumberland, John Hogg 
on the ballast-flora of the coasts of, 
1866, 74 
-University academical endowments, 
James Hey wood on the opening and 
extension of, 1863, 154 
- observations of earth-tremors in, 
1888, 522 
Durham (W.) on solution, 1887, 655 
Durness and Eriboll, the geology of, with 
special reference to the Highland con¬ 
troversy, B. N. Peach and J. Horne on, 
1885, 1027 
Dust as a ferment, C. R. C. Tichborne on, 
1870, 65 
-G. Gladstone on the, thrown up by 
Vesuvius during the late eruption, 1872, 
74 
Dutch expedition to Central Sumatra, 
Prof. P. J. Veth on the, 1879, 434 
*-in South Africa, Miss F. S. Alliott 
on the, 1886, 834 
Dwellings for the industrial classes, W. 
Botly on, 1873, 186 
-for the poor, improved, D. G. Hoey 
on, 1889, 704 
Dyas versus Permian, Rev. A. Irving on, 
1883, 503 
Dyck (Prof. W.) on the ‘Analysis Situs’ 
of threedimensional spaces, 1884, 648 
Dye-stuffs, Dr. W. Lauder Lindsay on the 
present uses of lichens as, 1867, 38 
Dyer (Prof. W. T. Thiselton). See 
Thiselton-Dyer (Prof. W. T ) 
Dyes, fast and fugitive, Prof, J. J. Hum¬ 
mel on, 1890, 782 
Dymond (T. S.) and Prof. Dunstan, 
the reduct ion-products of the nitro- 
paraffins and alkyl nitrites, 1887, 649 
Dynamic theory of heat, certain objec¬ 
tions to the, H. W. Cook on, 1870, 38 
Dynamical theory of radiation, Prof. A. 
Schuster on the, 1881, 561 
- problem, a geometrical illustra¬ 
tion of a, Prof. R. S. Ball on, 1883, 
407 
Dynamics, Arthur Cayley on the pro¬ 
gress of the solution of certain special 
problems of, 1862, 184 ; rectilinear 
motion, 186 ; central forces, 187 ; ellip¬ 
tic motion, 191 ; the problem of trvo 
centres, 194 ; the spherical pendulum, 
201 ; motion as affected by the rotation 
of the earth, and relative motion in 
general, 203 ; motion of a single par¬ 
ticle, 205 ; motion of three mutually 
attracting bodies in a right line, 206 ; 
ptarticular cases of the motion of three 
bodies, 207 ; motion in a resisting 
medium, 208 ; memoirs by Jacobi, Ber¬ 
trand, and Donkin, relating to various 
special problems, 213 ; the problem of 
three bodies, 214 ; transformation of co¬ 
ordinates, 218 ; principal axes, and 
moments of inertia, 223 ; the rotation 
of a solid body, 229 ; kinematics of a 
solid body, 242 ; miscellaneous problems, 
244 ; rotation round a fixed point, ib. ; 
other cases of the motion of a solid body , 
•ib .; list of memoirs and works referred 
to, 245 
-Prof. Boole on the differential equa¬ 
tions of, 1862, 3 
-of any material system, R. S. Ball 
on the extension of the theory of 
screws to the, 1881, 547 
- of non-Euclidian space, a funda¬ 
mental theorem in the, Prof. R. S. Ball 
on, 1883, 406 
■- elementary, the nomenclature of, 
J. AValmsley on, 1887, 622 
* -chemical, contributions to, by Dr. 
C. R. A. Wright, 1877, 54 
Dynamite, a recent preparation of nitro¬ 
glycerine as a blasting agent, A. Nobel 
on, 1868, 194 
Djmamo, burning by lightning of a 
magnet on a generating, Dr. A. Traill 
on the, 1888, 615 
* -controlling the direction of rota¬ 
tion of a, A. Winter on, 1888, 824 
--a new hand, W. H. Preece on, 1882, 
447 
-- for electro-metallurgy, Prof. G. 
Forbes on a, 1886, 815 
Dynamo-electric machines, improvements 
in, W. Ladd on, 1879, 258 
-machines, the general theory of, Dr. 
E. Hopkinson on, 1887, 612 
Dynamo-magnetic machine, W. Ladd on 
a new form of, 1867, 13 ; 1868, 19 
Dynamometer coupling, Profs. W. E. 
Ayrton and J. Perry on a, 1881, 553 
- a flexible band, Prof. W. C. Unwin 
on, 1883, 656 
