728 INDEX. 
ments, 609. Action of Neighbouring Circuits, 
613. Comparison of Two Capacities, 614. 
Comparison of Capacity with Self-Induction, 
614. General Theory, 615. Case of one 
Neighbouring Circuit, 618. Case of no Neigh- 
bouring Circuit, 618. Comparison of Capacities, 
619. Comparison of Capacity with Co-efficient 
of Induction, 621. Case of Multiple Are with 
Induction, 622. Wheatstone’s Bridge, 623. 
Comparison of Two Capacities, 624. Compari- 
son of a Capacity with a Co-efficient of Self- 
Induetion, 624. 
Part II.—On certain Experiments, mainly with 
the Differential Telephone, 625. Theory of the 
foregoing Experiments, 628. 
Co-efficients of an Equation, their Relation to the 
Functions of its Roots. By J. Dovaias 
Hamtitton Dickson, M.A., F.R.S.E., 535. 
Compressibility of Glass. By J. Y. Bucuanan, 589. 
Conceptions attain a Maximum in July, 121. Law 
of Capacity of Conceiving, 128. Conception 
and Temperature Numbers by Fourier’s Har- 
monic Analysis, 131. See Hayorarr (J. 
Berry). 
Contemporaneous Plugs of Rents in Igneous Rocks, 9. 
Contemporaneous Veins of Minerals, 3, 4. 
Convolvulin has no Purgative Action unless in 
contact with Bile, 149. 
Crystalline Rocks or Lavas of the Firth of Forth, 
487. 
D 
Davusrée (M.). His Experiments as to Tempera- 
ture requisite for Crystallisation of Silica and 
Felspar, 8. 
Delessite, Analyses and Specific Gravities of, 81-84, 
Delphinapterus leucas. See Beluga. 
Determinants, General Theorems on. By THomas 
Muir, M.A., F.R.S.E., 47. See Murr (Tuomas), 
Diabases or Granitoid Type of Rocks of Firth of 
Forth, 487. 
Dickson (J. Doucuas Hamitton), M.A. F.R.S.E. 
On a New Method of Investigating Relations 
between Functions of the Roots of an Equa- 
tion and its Co-efficients, 535. 
Differential Telephone. See Curystat (Professor), 
Disruptive Discharge of Electricity, Part IV. See 
MacraRLaNgé (ALEXANDER), D.Se., and Puay- 
FAIR (P. M.), M.A., 561. 
Dolerites of Basin of Firth of Forth, 437. 
E 
Elaterin has no Purgative Action unless in con- 
tact with Bile, 149. 
Electrical Contact. On the Transmission of Sound 
by Loose Electrical Contact. By James Buytu, 
M.A., F.R.S.E., 281. 
Electricity. Disruptive Discharge of Electricity, 
Part IV. By A. Macraruang, D.Sc., F.R.S.E., 
and P. M. Puayrarr, M.A., 561. Through a 
Paraffin, 561. Through Olive-Oil, 562. Elec- 
trical Resistance of Wires of certain Alloys, 
599. 
Enteromorpha, 555. See Geppxs (P.), F.R.S.E. 
Equations. A New Method of Investigating Rela- 
tions between Functions of the Roots of an 
Equation and its Co-efficients. By J. Doueias 
Hamitton Dtcxson, M.A., F.R.S.E., 535. 
Euplectella aspergillum, its Structure, and the 
Arrangement of its Soft Parts, 661. See 
Scuuze (Professor Franz EmHArD). 
Hurynotus. A genus of the Platysomide, 348. 
Exfiltrative Veins, 3, 8, 9, 20, 29, 38. 
F 
Felsite Rocks of Basin.of the Firth of Forth, 510, 
Firth of Forth. Its Carboniferous Volcanic Rocks, 
437. See Professor GEIKIE. : 
Fragmental Rocks or Tuffs of the Basin of the Firth 
of Forth, 512. 
G 
Geppes (P.), F.R.S.E. On the Phenomena of 
Variegation and Cell-Multiplication in a Species 
of Enteromorpha, 555. 
GuikiE (Professor), F.R.S.E, On the Carboniferous 
Volcanic Rocks of the Basin of the Firth of 
Forth, their Structure in the Field and under 
the Microscope, 437, 
Part I.—Stratigraphy. A.—Carboniferous Strata 
of the Basin of the Firth of Forth, 441. B.— 
Volcanic Districts, 445. Structure of the Vol- 
canic Masses, 455. 
Part Il.—Petrography. I. The Crystalline Rocks 
or Lavas, 487. A. The Augite-Felspar Rocks, 
487. B. Felspar-Magnetite Rocks, 508. C. 
Felspar (Orthoclase) Rocks, 510, II. The 
Fragmental Rocks or Tuffs, 512. 
Geometry of Position, 657. See Tarr (Professor), 
657. 
Glass, Preliminary Note on the Compressibility of 
Glass. By J. Y. Bucuanan, M.A,, F.R.S.E., 
589. 
Glauconite, Analysis of, 79. 
Goopwin (W. L.) and Rozinson (G. Carr), F.R.S.E, 
On some new Bases of the Leucoline Series, Part 
IL., 265, 273. 
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