ANNOUN CEMENT OF MEETINGS OF THE ACADEMY AND 
AFFILIATED SOCIETIES 
Saturday, October 20. The Philosophical Society. 
Wednesday, October 24. The Geological Society. 
Thursday, October 25. The Chemical Society, at the Cosmos Club, 8 p.m. 
Program: J. W. McBain: A study of soap solutions and its bearing on 
collord chemistry. 
Saturday, October 27. The Biological Society. 
‘Thursday, November 1. The Entomological Society. 
Saturday, November 3. The Philosophical Society. 
PROGRAMS ANNOUNCED SINCE THE PRECEDING ISSUE OF THE J OURNAL 
Thursday, October 4. The Entomological Society, at the National Museum, at 8 p.m. 
Program: L. O. Howarp: Notes on a recent trip to Europe. 
Saturday, October 6. The Philosophical Society, at the Cosmos Club, at 8.15 p.m. 
- Program: F. Wenner and A. W. Smita: The measurement of low resistance by the 
Wheatstone bridge. Epwarp H. Bow1s: Worldwide synoptic meteorological charts, 
and some inferences based thereon. R.B.Sosman and H. E. Merwin: The effect of 
jine grinding on the density of quartz. 
Thursday, October 11. The Chemical Society, at the Cosmos Club. Program: E. W. 
Wasupurn: Physical chemistry and ceramics. 
Thursday, October 18. Tum AcapEmy, at the Cosmos Club. Program: ALES HrpuiéKa: 
Ancient man in Europe. 
