TABLE OF CONTENTS. 



Vll 



PAGE 



LXXIX. Instruments connected with Fluids 523 



LXXX. Whewell's Writings and Correspondence (Review) ..... 528 



LXXXI. On Ohm's Law . . ......... 533 



LXXXII. On the protection of buildings from lightning ..... 538 



LXXXIII. Capillary Action 541 



LXXXI V. Hermann Ludwig Ferdinand Helmholtz ... ... 592 



LXXXV. On a Paradox in the Theory of Attraction 599 



LXXXVI. On Approximate Multiple Integration between Limits by Summation . . 604 



LXXX VII. On the Unpublished Electrical Papers of the Hon. Henry Cavendish . . 612 



LXXXVIII. Constitution of Bodies 616 



LXXXIX. Diffusion 625 



XC. Diagrams 647 



XCI. Tait's Thermodynamics (Review) 660 



XCII. On the Electrical Capacity of a long narrow Cylinder and of a Disk 



of sensible thickness . . . . . . . . . .672 



XCIII. On Stresses in Ratified Gases arising from Inequalities of Temperature . 681 



XCIV. On Boltzmann's Theorem on the average distribution of energy in a system 



of material points 713 



XCV. The Telephone (Rede Lecture) . .... .742 



XCVI. Paradoxical Philosophy (A Review) 756 



XCVII. Ether 763 



XCVIII. Thomson and Tait's Natural Philosophy (A Revieiv) . 776 



XCIX. Faraday 786 



C. Reports on Special Branches of Science .... . . 794 



CI. Harmonic Analysis 797 



