CONTENTS. 
VII. On the Eclipses of Agathocles, Thales, and Xerxes. By G. B. Airy, Esq.. 
Astronomer Royal 179 
VIII. On the Dissolution of Urinary Calculi in dilute Saline Fluids, at the Temperature 
of the Body, hy the aid of Electricity. By Henry Bence Jones, M.D., F.R.S., 
Physician to St. George's Hospital 201 
IX. On Molecular Influences . — Part I. Transmission of Heat through Organic 
Structures. By John Tyndall, F.R.S 217 
X. On the Impregnation of the Ovum in the Amphibia. {Second Series, Revised.) 
And on the direct Agency of the Spermatozoon. By George Newport, F.R.S. , 
F.L.S. 203 
XI. Description of some Species of the extinct Genus Nesoclon, ivith Remarks on the 
primary Group (Toxodontia) of Hoofed Quadrupeds, to which that Genus is 
referable. By Professor Owen, F.R.S. Sfc. . .291 
