VI, 
Gwtthee R. F., M.A. — On a form of Representing the Velocity at any 
point of an Incompressible Fluid under Conservative Forces, 
p. 114. On an adaption of the Lagrangian form of the equations 
of fluid motion, Part I., p. 203. 
Hartog M. M., M.A., B.Sc., F.L.S. — On the Means by which Hydra 
Swallows its Prey, p. 29. Additional Note on Hydra, p. 40. On 
some Undescribed Hairs in Copepoda, p. 41. On an Undescribed 
Acinetan, p. 41. On the Anal Respiration of the Copepoda, p. 61. 
Johnson William H., B.Sc.— On the Electrical Resistance and its 
Relation to the Tensile Strain and other Mechanical Properties of 
Iron and Steel Wire, p. 147. 
Joule J. P., D.C.L , LL.D., F.R.S., President. — On a Simple Means for 
Checking the Oscillations of a Telescope, p. 4. 
Mackeeeth Rev. Thomas, F.R.A.S., F.M.S.—On the Rainfall adjacent 
to the Sweetloves Reservoir, Sharpies, for 1879, p. 72, 
Melvill J. Cosmo, M.A., F.L.S. — On the Occurence of Silene Oallica 
(L.) and its Sub-species in Jersey, p. 68. 
Murphy Joseph John, F.G.S. — On an Extension of the Ordinary 
Logic, connecting it with the Logic of Relatives, p. 1. 
Plant John, F.G.S, — Bog Butter {Butyrellite), from Co. Galway, Ireland, 
p. 70. On Flexible Sandstone, p. 103. Uses of Infusorial Earth, 
p. 106. 
Ransome Arthur, M,A., M.D.— -On Epidemic Cycles, p. 75. 
Rawson Robert, Assoc. I.N.A. — Screw Propulsion, Part II., p. 21. On 
Screw Propulsion, Part III., p. 55. Notes on the Biquadratic 
Equation 
+ nx^ + ax^ ± + c = 0, p. 127. 
Rogers Thomas. — On the Land and Fresh-water Shells of Tasmania 
p. 101. 
Schoelemmer Professor Carl, F.R.S. — On the Origin of the word 
* Chemistry’, p. 35. 
ScHUNCK Edward, Ph.D., F.R.S. — Note on modified Chlorophyll from 
the leaves of Eucalyptus globulus, p, 157, 
