MAR~5192f ] 



CON T E N T S 



VOL. XV. 



No. PAGE 



I._The Subsidence of Torsional Oscillations and the Fatigue of 

 Iron Wires when subjected to the Influence of Alternating 

 Magnetic Fields of Frequencies up to 250 per second. By 

 William Brown, b.sc. (January, 1916.) . . 1 



II. Preliminary Notes on the Carbohydrates of the Musci. By 



Thomas G. Mason, b.a., Diplom. Agric (February, 1916.) 13 

 HI.— A New Form of very High Besistance for use with Electro- 

 meters. By John J. Bowling, m.a., m.r.i.a. (February, 

 1916.) .....-• 29 



IV.— On the Path of a small Permeable Body moving with Negligible 

 Acceleration in a Bipolar Field. By Philip E. Belas, b.a., 

 a.r.c.so.i., and Marcus Hartog, m.a., d.so. (n.u.i.). (Plate I.) 

 (February, 1916.) ...••• 33 

 V.— The Change of Length in Nickel Wires of Different Rigidities, 

 due to Alternating Magnetic Fields of Frequencies up to 150 

 per second. By William Brown, b.sc. (February, 1916.) 41 

 VI.— Osmotic Pressures in Plants. VI— On the Composition of the 

 Sap in the Conducting Tracts of Trees at Different Levels 

 and at Different Seasons of the Year. By Henry H. Dixon, 

 so.d. (dubl.), f.r.s., and W. B. G. Atkins, sc.d. (dubl.), f.i.o. 

 (March, 1916.) . • • • ' • 



VII.— The Verticillium Disease of the Potato. By George H. 



Pethybridge, ph.d., b.sc. (Plates II-III.) (March, 1916.) 63 

 VIII.— On the Boiling-points and Critical Temperatures of Homologous 



Compounds. By Sydney Young, d.sc, f.r.s. (April, 1916.) 93 

 IX.— The Subsidence of Torsional Oscillations of Nickel Wires when 

 subjected to the influence of Transverse Magnetic Fields 

 up to 200 C.G.S. Units. By William Brown, b.sc. (April, 



1916.) " 



X.— On the Hydrocarbons of Beeswax. By Hugh Byan, d.sc, and 



Thomas Dillon, d.sc. (May, 1916.) . ■ .107 



XL— On Desoxy-Hydrocatechin-Tetramethyl-Ether. By Hugh Ryan, 



d.sc, and Michael J. Walsh, m.sc. (May, 1916.) . . 113 



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