CONTENTS. xiii 



WEDNESDAY, SEPTEMBER 12. 



Page 

 3. Report on Electrical Standards (p. 53) 656 



2 *A Form of Wheatstone's Bridge. By E. H. Gkiffiths, F.R.S 655 



3. Note on an Improved Standard Resistance Coil. By R. S. Whipple 



(p. 55) 655 



4. A Preliminary Research on Explosive Gaseous Mixtures. By J. E. 

 Petatel 655 



5. On the Relations of Radiation to Temperature. By Dr. J. Larmoe, F.R.S. 657 

 G, *0n the Infra-red of the Solar Spectrum. By Dr. S. P. Langley, F.R.S. G5J) 



DEPARTMENT OF ASTRONOMY. 

 FRIDAY, SEPTEMBER 7. 



Address by Dr. A. A. Commok, F.R.S., F.R.A.S., Chairman 659 



1. On the Application of the Electric Telegraph to the Furtherance of 

 Eclipse Research. By Professor Dayid P. Todd, M.A., Ph.D 673 



2. On the Operation of Eclipse Instruments Automatically. By Professor 

 David P. Todd, M.A., Ph.D 673 



• 3. On the Adaptation of the Principle of the Wedge Photometer to the 

 Biograph Camera in Photographing Total Eclipses. By Professor David 

 P. Todd, M.A., Ph.D 674 



4. On the ' Square-shouldered ' Aspect of Saturn. By E. M. Antoniadi, 

 F.R.A.S • 675 



6. On the Types of Sun-spot Disturbances. By Rev. A. L. Ooetie, F.R.A.S. 675 

 6. On a Cheap Form of Micrometer for Determining Star Positions on 



Photographic Plates. By Professor H. H. Tuenee, M.A., F.R.S 676 



TUESDAY, SEPTEMBER 11. 



1. Comparison of Prominence and Corona Photographs taken at Santa 

 Pola, Spain, and Wadesboro, in North Carolina, during the Total Solar 

 Eclipse of May 28, 1900. By William J. S. Lookyee, M.A., Ph.D. ... 676 



2. "'^Description of the New Photographic Equatorial of the Cambridge 

 Observatory. By A. R. Hinks, M.A 677 



3. *Diagram for Planning Observations of Eros at the Opposition of 1900-1. 



By A. R. HiNKS, M.A 677 



4. On some Points in Connection with the Photography of a Moving Object. 



By W. E. Plummer " 677 



5. On Needle-hole Maps for Meteor Observation. By J. C. W. Heeschel 678 



6. ^Stationary Meteor Radiants. By G. C. Bompas, F.R.A.S 67!) 



7. ■•'Cosmic Evolution. By Professor A. W. Bickeeton 679 



8. Duration of Totality of the Solar Eclipse of May 28, 1900. By C. T. 



Whitmell, M.A., B.Sc ' 680 



0. DurationofAnnularityin a Solar Eclipse. ByC.T. Whitmell,M.A.,B.Sc. 680 



10. On the Connection between Latitude-variation and Terrestrial 



Magnetism. By J. Halm 680 



