TRANSACTIONS OF THE SECTIONS. Xlll 



Page 

 6- On the Resolution of the Spectral Lines of Mercury. By Professor 



J. C. McLennan and N. Macallum 542 



7. On the Active Deposit from Actinium. By W. T. Kennedy 542 



8. Report of the Committee on Electrical Standards (p. 38) 543 



Department of Cosmical Physics and Astronomy. 



1. On Barometric Waves of Short Period. By Dr. Wilhelm Schmidt 543 



2. Observations on the Upper Atmosphere during the Passage of the 



Earth through the Tail of Halley's Comet. By W. H. Dines, 

 F.RS 544 



3. Radiation Pressure in Cosmical Problems. By J. W. Nicholson, 



M.A., D.Sc 544 



4. Note on the Results of the Hourly Balloon Ascents made from the 



Meteorological Department of the Manchester University, March 

 18 to 19, 1910. By Miss Margaret White, M.Sc 545 



5. ^Temperature Inversions in the Rocky Mountains. By R. F. 



Stupart 546 



6. The Effect of Radiation on the Height and Temperature of the 



Advective Region. By E. Gold, M.A 546 



7. *A Sensitive Bifilar Seismograph with some Records. By Professor 



F. G. Baily, M.A 547 



WEDNESDAY, SEPTEMBER 7. 



1. *Stars as Furnaces. By Sir Norman Lockyer, K.C.B., F.R.S.... 547 



2. *On the Evolutions of a Vortex. By Professor W. M. Hicks, 



F.R.S 547 



3. Report of the Seismological Committee (p. 44) 547 



4. On the Rate of Propagation of Magnetic Disturbances. By C. 



Chree, D.Sc, F.R.S 547 



5. Ninth Report on the Investigation of the Upper Atmosphere (p. 72) 548 



6. Report on Magnetic Observations at Falmouth Observatory (p. 74) 548 



7. Report of the Committee to aid in Establishing a Solar Observatory 



in Australia (p. 42) 548 



8. Report on the Geodetic Arc in Africa (p. 75) 548 



9. Report on the Provision for the Study of Astronomy, Meteorology, 



and Geo2Jhysics in the Universities of the British Empire (p. 77) 548 



Section B.- CHEMISTRY. 

 THURSDAY, SEPTEMBER 1. 



Address by J. E. Stead, F.R.S., F.I.C., F.C.S., President of the 

 -Section . 549 



