SCIENTIFIC miOCEEBmGS— continued. 



13. Forbesia cancellata, gen. et sp. nov. (Sphenopteris, sp., Baily). By 



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



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



(January, 1912.) Is. 



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.so. 

 (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 Hekey H. Dixon, sc.d., f.e.s., and W. E. G. Atkins, 

 M.A. (February 21, 1912.) Qd. 



17. Improvements in Equatorial Telescope Mountings. By Sie Howard Geubb, 



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



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



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

 1912.) 6d. 



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



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

 9, 1912.) 6d. 



20. Heterangium 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 Metalhc 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. Moeeow, A.E.C.Sc.I. (Plate XXIV.) 

 (May 11, 1912.) Is. 



23. Award of the Boyle Medal to Sib Howaed Geubb, f.k.s., April 16, 1912. 



(May 18, 1912.) &d. 



DUBLIN: FRINTBI) AT CHE UNITEUSITV VKKSS BV roNSONBi' ANB QIBBS. 



