﻿XXIX — 



On the sum of the divisors of a number. — Eorsyth. On primitive roots of prime numbers 

 and their residues. — Glazebrook. A comparison of Maxwell's equations of the electro- 

 magnetic field with those of Helmholtz and Lorentz. — Airy. Continuation of Observations 

 on the state of an Eye affected with Astigmatism. — Rayleigh. On the measurement of 

 the electrical resistance between two neighbouring points on a conductor. — Shaw. On 

 dimensionai equations and change of units. — Glazebrook. On the general equations of 

 the electromagnetic field. — Leahy. On the Pulsations of Spheres in an Elastic Medium. — 

 Hill. On a Continuous Succession in part of the Guernsey Gneiss. — Hicks. On some 

 Irregularities in the Values of the Mean Density of the Earth, as determined by Baily. — 

 Larmor. On possible Systems -of Jointed Wickerwork, and their Degrees of Internai 

 Preedom. — Gaskell. On some Physiological Experiments. — Lea. On a method of comparing 

 the concentrations of two solutions of the same substance, but of different strengths. — 

 Gardiner. On the many layered Epidermis of Olivia Nobilis. — 3. Glazebrook. On the effect 

 of moisture in modifying the refraction of piane polarised light by glass. — Wilberforce. 

 On some experiments on the measurement of the capacity of a condenser. — Eves. On some 

 experiments on the Liver ferment. — Waldon. On the supra renai bodies. — Gardiner. On 

 the supposed presence of protoplasmi in the intercellular spaces. — Green. On a proteid 

 occurring in plants. — Gardiner and Lynch. On the secretory hairs on the stem of Thunbergia 

 laurifolia. — Glaisher. On the developments of E, J', G' in powers of the modulus. — ■ 

 Heycock and Neville. On a simplified form of Apparatus for determining the density of 

 Ozone. — Connel. On the effects of self-induction of the galvanometer in the determination 

 of the capacity of a condenser. — Middleton. On the future of naval warfare, with an 

 exhibition and account of a submarine boat. — Heathcote. Note on a peculiar sense organ 

 in Scutigera coleo'ptrata, one of the Myriapoda. 



"^Proceedings of the London mathematica! Society. N. 237-249. London, 8°. 



237-239. Buchheim. On the Theory of Matrices. — Griffìths. Eesults from a Theory 

 of Transformation of Elliptic Functions. — Jeffery. On Sphero-Cyclides. — 240-242. Jeffery. 

 On Sphero-Cyclides. — MacColl. On the Limits of Multiple Integrals. — Spottiswoode. On 

 Quadrio Transformations. — 243-244. Spottiswoode. On Quadrio Transformations. — Hill. 

 The Differential Equations of Cylindrical and Annular Vortices. — Neuberg. Sur les figures 

 semblablement variables. — Larmor. On the Extension of Ivory's and Jacobi's Distance- 

 Correspondences for Quadrio Surfaces. — 245-249. On the Extension of Ivory's and Jacobi's 

 Distance-Correspondences for Quadrio Surfaces. — Sylvester. Note on Certain Elementary 

 Geometrical Notions and Determinations. — Walker. On a Method in the Analysis of Piane 

 Curves, Part JJ. — Elliott. Qn Eliminants, and Associated Eoots. — Hirst. On Congruences 

 of the Third Order and Class. — Roberti. On the Arguments of Points on a Surface. — 

 Routh. On some Properties of certain Solutions of a Differential Equation of the Second 

 Order. — Larmor. On the Plow of Electricity in a System of Linear Conductors. — 250- 

 252. Mannlieim. Liaison ge'ome'trique entre les sphères osculatrices de deux courbes qui 

 ont les mèmes normales principales. — Muir. New Relations between Bipartite Functions 

 and Determinants, with a Proof of Cayley's Theorem in Matrices. — Basset. On the Potential 

 of an Electrified Spherical Bowl, and on the Velocity Potential due to the Motion of an 

 Infinite Liquid about such a Bowl. — Rogers. Note on the Porism of an Inscribed and 

 Circumscribing Polygon. — Bryant. On the Ideal Geometrical Form of Naturai Cell-Structure. 



'Proceedings of the r. geographical Society. N. M. S. Voi. Vili, 1. London, 1886. 8°. 



Hallet. Exploration survey for a railway connection between India, Siam, and China. — 

 Ravenstein. On Bathy-Hypsographical maps; with Special Reference to a Combination of 

 the Ordnance and Admiralty Surveys. — Letters from colonel Prejevalsky. — Eossiakof. 

 Notes of a Journey in Karateghin and Darvvaz in 1882. 



