Contents. v 



No. PAGE 



XXVI. — The Fatigue of Nickel and Iron Wires when subjected to 

 the Influence of Alternating Magnetic Fields of Frequency 

 50 per second. By William Beown, b.sc. (January, 



1915.) 336 



XXVII. — Search for Thorium in Cancerous Growths. By J. Joly, so.d., 



F.E.s. (January, 1915.) ..... 345 

 XXVIII. — On the Action of Pectase. By Nigel G. Ball. (January, 1915.) 349 

 XXIX. — A Quantitative Examination of the Elements of the Wood of 

 Trees in Eelation to the Supposed Function of the Cells in 

 the Ascent of Sap. By Heney H. Dixon, sc.d., f.e.s., and 

 Miss E. S. Maeshall, b.a. (January, 1915.) . . 358 



XXX. — An Example of the Multiple Coupling of Mendelian Factors. 



By James Wilson, m.a., b.sc. (January, 1915.) . . 369 



XXXI. — Osmotic Pressures in Plants. IV. — On the Constituents and 

 Concentration of the Sap in the Conducting Tracts, and on 

 the Circulation of Carbohydrates in Plants. By Heney H. 

 Dixon, so.d. (duel.), f.e.s. ; and W. R. G. Atkins, sc.d. 

 (duel.), f.i.c. (February, 1915.) .... 374 



XXXII. — The Subsidence of Torsional Oscillations of Iron Wires and 

 Alloys when subjected to the Influence of Alternating 

 Magnetic Fields of Frequency 50 per second. By W. 

 Beown, b.sc. (March, 1915.) . . . .393 



XXXIII. — Some Eesearches in Experimental Morphology. I. — On the 

 Change of the Petiole into a Stem by means of Grafting. 

 By Joseph Doyle, b.a., m.sc. (Plates XXVIII-XXXIV.) 

 (March, 1915.) . . . . . .405 



XXXIV. — Osmotic Pressures in Plants. V. — Seasonal Variations in the 

 Concentration of the Cell- Sap of some Deciduous and 

 Evergreen Trees. By Henky H. Dixon, sc.d. (duel.), f.e.s. ; 

 and W. E. G. Atkins, sc.d. (duel.), f.i.c. (March, 1915.) 445 



XXXV. — A Preliminary Account of a New Oedanometer for Measuring 

 the Expansive Force of Single Seeds, or Similar Small 

 Bodies, when wetted. By J. Bayley Butlek, m.a., m.b. ; 

 and John M. Sheeidan, b.a., m.sc (March, 1915.) . . 462 



XXXVI. — Simplified Solutions of certain Mendelian Problems in which 

 Factors have Inseparable Effects. By James Wilson, bi.a., 

 B.sc. (April, 1915.) . . . . .481 



XXXVII. — Eadio-Therapy ; Its Scientific Basis and its Teaching. By 



J. JoLY, SC.D., F.E.S. (April, 1915.) . . . 491 



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