CONTENTS. 



PAGE 



The Origin of the Thorough-bred Horse. By Prof. Eidgeway. (Commu- 

 nicated by A. E. Shipley) _'.'.";... . . . ' .... .141 



The Theory' of the Rate of Recombination of Ions in Oases. By 0. W. 



Richardson . -';. . 144 



On Mendelian Heredity of three characters allelomorphic to each other. 



By W. BAteson . . . . . . . . . . 153 



On the Difference of Potential between the T&rminals of a Vacuum Tube. 



By W. A. D. Rudge . ... . . . . .155 



The determination of curves satisfying given conditions. By H. Bateman. 163 



On the Existence of a Radio-active Gas in the Cambridge Tap-water. By 



Prof. Thomson '"..., . r J 172 



On the continuous spectrum. By T. H. Havelock. (Communicated by 



Prof. Thomson) . . . . . - . ... 175 



Experiments on the Thomson Effect in Alloys of Bismuth and Tin. By 



S. C. Laws . ....... . . . 179 



A Preliminary Account of an Investigation of the effect of Temperature 

 on the Ionization produced in Oases by the action of Rbntgen Rays. 

 By R. K. M c Clung . . ... . . . . .191 



A Coleopterous Insect embedded in the ivall of the Human Intestine. By 



D.Sharp . . . . . . . . . . .199 



On the influence of Electrons on Colloidal solutions. By W. B. Hardy . 201 



On a method of estimating the amounts of the oxides of Didymium and 

 Erbium by means of the absorption bands of their solutions and its 

 application to other ■ solutions. By J. E. Purvis . .,. . . . 202 



On the influence of -great dilution on the absorption spectra of highly con- 

 centrated solutions of the nitrates and chlorides of Didymium and 

 Erbium. By J. E. Purvis. [With Plates I and II] . . . 206 



A Lecture Experiment to illustrate the effect of a straight current on 



a -magnetic pole. By P. V. Bevan 212 



Irreversible simultaneous linear reactions. By H. O. Jones and 0. W. 



Richardson . . ... . . ■ • ■ ■ 215 



The Estimation of Hydroxylamine (Preliminary Note). By H. O. Jones 



and F. W. Carpenter .... . . . . .218 



On the differential equations of the hyper elliptic functions. By Dr H. F. 



Baker . . . . • 219 



On: Bismuth. By R. H. Adie . . . . . -. .240 



Proceedings at ^Meetings . • ■ • ■ • • • • • 247 



Plates I and II will be issued in the next part. 



