SCIENTIFIC FR0CEEDmG8— continued. 



13. Forbesia cancellaia, geii. et sp. nov. (Sphenopteris, sp., Baily), By 



T. Johnson, d.sc, f.l.s. (Plates XIII. and XIV.) (January, 1912.) Is. 



14. The InLeritauce of the Dun Coat-Colour in Horses. By James Wilson, m.a., b.sc. 



(January, 1912.) l.s. 



15. On the Vacuum Tube Spectra of the Vapours of some Metals and Metallic 



Chlorides. Part I. — Cadmium, Zinc, Thallium, Mercury, Tin, Bismuth, 

 Copper, Arsenic, Antimony, and Aluminium. By James H. Pollok, d.sc. 

 (Plates XV. and XVI.) (February 21, 1912.) Is. 



16. Changes in the Osmotic Pressure of the Sap of the Developing Leaves of 



Syringa vulgaris. By Hekry H. Dixon, sc.d., f.k.s., and W. E. G. Atkins, 

 M.A. (February 21, 1912.) 6d. 



17. Improvements in Equatorial Telescope Mountings. By Sm Howard Grubb, 



F.E.S. (Plates XVII.-XIX.) (March 26, 1912.) Is. 



18. Variations in the Osmotic Pressure of the Sap of Ilex aquifolium. By 



Heney H. Dixon, sc.d., f.e.s., and W. E. G. Atkins, m.a., a. i.e. (April 9, 

 1912.) Qd. 



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



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

 9, 1912.) 6d. 



20. Heterangiiim hibernicuiii, 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 tlie Vacuum Tube Spectra of .some Metals and Metallic Chlorides. Part 



11. — 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. 1'he Ultimate Lines of the Vacuum-tube Spectra of Manganese, Lead, Copper, 



and Lithium. By Genevieve V. Moeeow, A.E.C.Sc.I. (Plate XXI^■.) 

 (May 11, 1912.) Is. 



DUUMN" : PKlNTKr> AT fHF. UNITRKSITY VHIISP BY HONMtNHY AN II GIBBS. 



