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SCIENTIFIC PROCEEDINGS— co^itme^f^. 



19. Variations in tlie Osmotic Pressure of the Sap of the Leaves of Hedera helix. 



By Henry H. Dixon, sc.d., f.e.s., and W. E. G. Atkins, m.a., a.i.o. (April 

 9, 1912.) Qd. 



20. Eeterangium hibernicum, sp. nov. : A Seed-bearing Heterangium from 



County Cork. By T. Johnson, d.sc, f.l.s. (Plates XX. and XXI.) 

 (April 12, 1912.) Is. 



21. On the Vacuum Tube Spectra of some Metals and Metallic Chlorides. Part 



II. — Lead, Iron, Manganese, Nickel, Cobalt, Chromium, Barium, Calcium, 

 Strontium, Magnesium, Potassium, Sodium, and Lithium. By James H. 

 PoLLOK, D.sc. (Plates XXII. and XXIII.) (May 7, 1912.) Is. 



22. The Ultimate Lines of the Vacuum-tube Spectra of Manganese, Lead, Copper, 



and Lithium. By Genevieve V. Moebow, a.r.o.sc.i. (Plate XXIV.) 

 (May 11, 1912.) Is. 



23. Award of the Boyle Medal to Sir Howard Grubb, f.r.s., April 16, 1912. 



(May 18, 1912.) 6d. 



24. Notes on DiscMdia rafflesiana, Wall., and Dischidia numimdaria, Br. By 



A. F. G. Kerr, m.d. (Plates XXV.-XXXI.) (September 30, 1912.) 2s. 



25. Recherches Experimentales sur la Densite des Liquides en dessous de 0°. Par 



Jean Timmeemans. (October 18, 1912.) 3s. 



26. Steady and Turbulent Motion in Gases. By John J. Dowling, m.a. (Plates 



XXXII. and XXXIII.) (November 16, 1912.) Is. 6rf. 



27. Unsound Mendelian Developments, especially as regards the Presence and 



Absence Theory. By James Wilson, m.a., b.sc. (December 18, 1912.) Is. 6d. 



28. Osmotic Pressures in Plants, I. — Methods of Extracting Sap from Plant 



Organs. By Hrnry H. Dixon, sc.d., f.r.s., and W. E. G. Atkins, m.a., a.i.c. 

 (February 8, 1913.) Is. 



29. Osmotic Pressures in Plants. II. — Cryoscopic and Conductivity Measurements 



on some Vegetable Saps. By Henry H. Dixon, sc.d., f.r.s., and W. E. G. 

 Atkins, m.a., a.i.c (February 8, 1913.) 6f/. 



30. A Method of Microscopic Measurement. By J. Joly, sc.d., f.r.s. (February 



7, 1913.) Qd. 



31. The Melting-Points of some of the Earer Minerals. By Arnold L. Fletcher, 



M.A., b.e. (February 15, 1913.) Is. 



32. A Eefined Method of obtaining Sublimates. By Arnold L. Fletcher, m.a., 



B.E. (February 17, 1913.) M. 



33. On the Germination of the Seeds of some Dicotyledons. By J. Adams, 



M.A. (Cantab.). (Plate XXXIV.) (February 21, 1913.) Is. 6(/. 



34. On Bothrodendron [Gyclostiyma) kiltorkense, Haughton, sp. By T. Johnson, 



D.sc, F.L.S. (Plates XXXV.-XLI.) (March 20, 1913.) 2s. 



35. On the Eotting of Potato Tubers by a new species of Phytophthora having a 



method of Sexual Eeproduetion hitherto undescribed. By George H. 

 Pethybridge, PH.D., B.sc. (Platcs XLII.-XLIV.) (March 26, 1913.) 2s. 6d. 



36. On Pure Cultures of Phytophthora infestans De Bary, and the Development 



of Oospores. By George H. Pethybridge, ph.d., b.sc, and Paul A. 

 MuEPHY, A.R.O.SC.I. (Platcs XLV. and XLVI.) (March 26, 1913.) Is. 6d. 



37. Inter- Alternative as opposed to Coupled Mendelian Factors : A Solution of 



the Agouti-Black Colour in Eabbits. By James Wilson, m.a,, b.sc 

 (March 27, 1913.) 6d. 



38. Notes on Eecent Pampa and other Formations in Patagonia. By E. G. Fenton. 



(Plate XLVII.) (May 15, 1913.) Qd. 



39. On the Influence of Self-induction on the Spark Spectra of Certain Non- 



Metallic Elements. By Genevieve V. Morrow, a.r.c.sci. (Plates 

 XLVIII-LL) (May 19, 1913.) Is. Gd. 



DUBLIN: PKINTBI) AT THE UNIVEttSlTV PKESS^BY PON80NBV AND OIHKS. 



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