■-o .t, nued. 



16. A Vibrating-I : le Eeetifier foi on Curr ^s- By John J. Dowling^ 



M.A., P.iNST.i'., a id J. T. Hap vEfl-'uary, 1921.) 6d. 



17. A Sensitive Valve Method foi .ae Masurement of Capacity, with some 



Important Applications. By JonrJ. Dowling, m.a., f.inst.p. (February, 

 1921.) 6rf. 



18. A Direct Beading Ultra-Miev leter. By John J. Dowong, m.a., m.r.i.a., 



F.INST.P. (March, 1921 . ; 



19. Studies in the Physiograph ind Glacial Geology of Southern Patagonia. By 



E. G. Fenton. ^Plat: V, VI, and VII.) (March, 1921.) 4s. Qd. 



20. Award of the Boyle Jedal to George H. Pethybridge, b.sc, ph.d., 1921> 



(March. 1921). ,:.. 



21. The Couceutratjii .uid Purification of Alcoholic Fermentation Liquors. 



Part I. — TL Distillation in Steam of certain Alcohols. By Joseph Eeilly, 



M.A., feg., M.K.I.A., F.i.c, and Wilfred J. Hickinbottom, m.sc, a. i.e. 



(Ai-ndt, 1921.) 



22,jLne "Browning" and "Stem-Break" Disease of Cultivated Flax (Linum 



usitatissimum), caused by Polyspora lini n. gen. et sp. By H. A. Lapfeety, 



a, B.C. SCI., Assistant in the Seeds and Plant Disease Division, Department 



of Agriculture and Technical Instruction for Ireland. [Communicated by 



Dr. George H. Pethybridge, b.sc] (Plates VIII-X.) (August, 1921.) 



23. A New Principle in Blowpipe Construction. By H. G. Becker, a.r.c.sc.i.j 



A.i.c, Demonstrator in the Eoyal College of Science, Dublin. (August, 

 1921.) 



24. Uncharged Nuclei produced in Moist Air by Ultra- Violet Light and other 



Sources. By the late Prof. J. A. McClelland, f.r.s., and J. J. M'Henky, 

 M.sc, University College, Dublin. (August, 1921.) 



[Nos. 21 to 24, price 7s.] 



DVHLIN : PRINTED AT THE UNIVERSITY PHES8 BV PONSONHY AND HIBES. 



