SCI EN' 



VOLUME XVU. 



1. Experiments on the Ek •■r"-"f!on r cl'ict ' _ „ up Water, with 



Special Application to Simpson's Theory of the Electricity of Thunder- 

 storms. By Professor J. J. Nolan, m.a., d.sc, and J. Enright, b.a., m.sc. 

 University College, Dublin. (June, 1922.) 



'2. Cataphoresis of Air-Bubbles in Various Liquids. By Thomas A. McLaughlin, 

 M.sc, A.INST. p., University College, Galway. (June, 1922.) 



3. On the Aeration of Quiescent Columns of Distilled Water and of Solutions of 



Sodium Chloride. By Professor W. E. Adeney, a.r.c.sc.i,, d.sc, f.i.c. ; 

 Dk. a. G. G. Leonard, f.r.csci., b.sc, f.i.c. ; and A. Richardson, 

 a.r.c.sc.i., a.i.c. (June, 1922.) 



4. On a Pliytophthora Parasitic on Apples which has both Amphigynous and 



Paragynous Antheridia ; and on Allied Species which show the same 

 Phenomenon. By H. A. Lafferty and George H. Pethybridge, Seeds 

 and Plant Disease Division, Department of Agriculture and Technical 

 Instruction for Ireland. (Plates I and II.) (June, 1922.) 



5. Some Further Notes on the Distribution of Activity in Kadium Therapy. 



By H. H. Poole, m.a., scd., Chief Scientific Officer, Royal Dublin Society. 

 (June, 1922.) 



6. Preliminary Experiments on a Chemical Method of Separating the Isotopes 



of Lead. By Thomas Dillon, d.sc ; Rosalind Clarke, d.sc ; and Victor 

 M. HiNCHY, B.sc (Chemical Department, University College, Galway). 

 (July, 1922.) 



7. The Lignite of Washing Bay, Co. Tyrone. By T. Johnson, d.sc, f.l.s., 



Professor of Botany, Royal College of Science for Ireland ; and Jane G. 

 GiLMORE, B.sc. (Plate III.) (August, 1922.) 



^. Libocedrus and its Cone in the Irish Tertiary. By T. Johnson, d.sc, f.l.s.. 

 Professor of Botany, Royal College of Science for Ireland ; and Jane G. 

 GiLMOHE, B.sc (Plate IV.) (August, 1922.) 



9. The Electrical Design of A.C. High Tension Transmission Lines. By 

 H. H. -Jeffcott. (August, 1922.) 



10. The Occurrence of Helium in the Boiling Well at St. Edmundsbury, Lucan. 



By A. G. G. Leonard, f.r.csci., ph.d., f.i.c, and A. M. Richardson, 

 A.R.C.SC.I., A.I.C (Plate V.) (August, 1922.) 



[Nos. 1 to 10, price 9s.] 



11. On the Detonating Action of a Particles. By H. H. Poole, m.a., scd., 



Chief Scientific Officer, Royal Dublin Society. (December, 1922.) 



12. The Variations of Milk Yield with the Cow's Age and the Length of the 



Lactation Period. By James Wilson, m.a., b.sc (December, 1922.) 



13. A Note on Growth and the Transport of Organic Substances in Bitter 



Cassava (Matiihot utilissiina). By T. G. Mason, m.a., b.sc (December, 

 1922.) 



[Nos. 11 to 13, price Is. 6(/.] 



