CONTENTS. 



VOL. XVI. 



No. PAGE 



I. — A Cryoseopic Metliod for tlie Estimation of Sucrose. By Henry 

 H. Di.toN, sc.D., F.R.S., and T. G. Mason, m.a., sc.b. 

 (January, 1920.) ...... 1 



II. — Tlie Carboniferous Coast-Section at MalaLide, Co. Dublin. 

 By Louis B. Smyth, b.a., sc.b. (Plates I, II.) (February, 

 1920.) ....... 9 



III. — The Application of the Food-Unit Method to the Fattening 

 of Cattle. By James Wilson, m.a., b.sc. (Plates III, IV.) 

 (February, 1920.) ...... 25 



IV. — The Holothurioidea of the Coasts of Ireland. By Anne L. 



Massy. (April, 1920.) . . . . .37 



V. — PhotosynthesiHS and the Electronic Theory. By Henry H. 

 Dixon, so.d., f.r.s., and Horace H. Poole, so.d. (March, 

 1920.) ....... 68 



VI. — Note on the Decay of Magnetism in Bar Magnets. By William 



Brown, b.sc. (March, 1920.) . ' . . .78 



VII. — On the Inhibition of Invertase in the Sap of Qalanllms nivalis. 



By T. G. Mason, m.a., sc.b. (April, 1920.) . . .83 



VIII. — The Change in the Piigidity of Nickel Wire with Magnetic 

 Fields. By William Brown, b.sc, and Patrick O'Callaghan, 

 a.e.c.so.i., a. I.e. (August, 1920.) . . . .98 



IX. — Some Derivatives of Nitrotoluidine (4-iiitro-2-amido-l-methyl- 

 benzene). By A. G. G. Leonard, a.e.c.sc.i., b.sc, ph.d., 

 and Agnes Browne, a.r.csci., b.sc (August, 1920.) . 105 



X. — An Investigation into the Causes of the Self-Ignition of Ether- 

 Air Mixtures. By the late Professor J. A. McClelland, 

 D.sc, F.R.S., and Eev. H. V. Gill, s.j., d.s.o., m.c, m.a. 

 (August, 1920.) . . , . . .109 



