SCIENTIFIC PROCEEDINGS— continued. 



22. The Gymnosomatous Pteropoda of the Coasts of Ireland. By Anne L. Massy. 



(Plate VIII.) (July, 1917.) Is. 



23. Spermolithus Devonicus, gen. et sp. nov., and other Pteridosperms from the 



Upper Devonian Beds at Kiltorcan, Co. Kilkenny. By Thomas Johnson, 

 d.sc, f.l.s. (Plates IX-XIV.) (August, 1917.) Is. Gd. 



24. The Genus Taenitis, with some Notes on the remaining Taenitidinae. By 



Elizabeth J. Leonard, m.sc. (Plate XV.) (February, 1918). Is. 



25. The Quantitative Spectra of Lithium, Eubidium, Caesium, and Gold. By 



A. G. G. Leonakd, a.r.csci., b.sc, ph.d., and P. Whelan, a.r.o.sci. 

 (Plate XVI.) (February, 1918.) Gd. 



26. The Polarisation of a Leclanche Cell. By Felix E. Hackett, ph.d., and 



B. J. Feely, a.b.c.so.i. (March, 1918.) Gd. 



27. The Electrical Besistance of Porcelain at Different Temperatures. By B. G. 



Allen, b.sc, lond. ; a.r.c.so.i. (June, 1918.) Is. 



28. Observations on the Morphology of Lari.v leptolepis. By Joseph Doyle, 



b.a., m.sc. (Plates XVII-XVIII.) (August, 1918.) Is. 



29. The Insulating Properties of Erinoid. By B.. G. Allen, b.sc. (lond.), a.e.c.sc.i. 



(August, 1918.) Is. 



30. A Disease of Flax Seedlings caused by a species of Colletoiriclium, and trans- 



mitted by Infected Seed. By George H. Pethybridge, b.sc, ph.d., and 

 H- A. Lafferty, a.r.csci. (Plates XIX-XX.) (August, 1918.) Is. Gd. 



31. The "'Determination of the Bate of Solution of Atmospheric Nitrogen and 



Oxygen by Water. Part I. By W. E. Adeney, d.sc, a.r.csci., p.i.c, and 

 H. G. Becker, a.r.csci. (Plate XXI.) (August, 1918.) Is. 



32. The Absorption of Water by Vulcanized Fibre and Erinoid on Exposure to 



Moist Air, and the consequent change of Electrical Besistance. By 

 B. G. Allen, b.sc (lond.), a.r.csci. (October, 1918.) Gd. 



33. The Twist and Magnetization of a Steel Tube in a Spiral Magnetic Field. 



By F. E. Hackett, m.a., ph.d. (October, 1918). Gd. 



34. Mahogany, and the Becognition of some of the Different Kinds by their Micro- 



scopic Characteristics. By Henry H. Dixon, scd., f.r.s. (Plates XXII.- 

 XLIV.) (December, 1918.) 4s. Gd. 



35. A Disease of Tomato and other Plants caused by a New Species of Phytoph- 



thora. By George H. Pethybridge, b.sc, ph.d., and H. A. Lafferty, 

 a.r.csci. (Plates XLV.-XLVII.) (February, 1919). Is. Gd. 



36. Exudation of Water by Colocasia Antiquorum. By Margaret G. Flood, b.a. 



(Plates XLVIII.-XLVIIIa.) (April, 1919.) Is. 



37. The Determination of the Volatile Fatty Acids by an Improved Distillation 



Method. By Joseph Beilly, m.a., d.sc, f.r.c.sci., and Wilfred J. 

 Hickinbottom. (Plate XLIX.) (April, 1919.) Is. 



38. Solar Halos seen at Greystones, Co. Wicklow, on September 22nd, 1879 ; and 



in Texas and Ohio, U.S.A., on October 3rd, 1917. By Sir John Moore, 

 m.a., m.d., d.sc, f.r. iiET. soc (Plate L.) (April, 1919.) Gd. 



39. Two New Species of Collembola from Nyassaland. By George H. Carpenter, 



d.sc, m.r.i.a. (Plate LI.) (April, 1919.) Gd. 



40. An Economic Method of Determining the Average Percentage of Fat in a 



Cow's Milk for a Lactation Period. By E. J. Sheehy, f.r.c.sci. (Plates 

 LII.-LIII.) (May, 1919.) Is. 



41. The Comparative Variation of the Constituent Substances of Cows' Milk. By 



E. J. Sheehy, f.r.c.sci. (May, 1919.) Gd. 



42. Possible Causes of Variation in the Quantity and Quality of Cows' Milk. By 



E. J. Sheehy, f.r.c.sci. (May, 1919.) Gd. 



43. The System n-Butyl Alcohol-Acetone-Water. By Joseph Beilly, m.a., d.sc, 



f.r.c.sci., and Edgar W. Balph. (June, 1919.) Gd. 



1>UKLIN : PRINTED AT THE UNIVERSITY PI'ESB BY PONSONHY AND G\HBS. 



