ANNOUNCEMENT OF MEETINGS OF THE ACADEMY AND 
AFFILIATED SOCIETIES 
Saturday, May 19. The Philosophical Society. 
Wednesday, May 23. The Geological Society. 
Saturday, May 26. The Biological Society. 
PROGRAMS ANNOUNCED SINCE THE PRECEDING ISSUE OF THE JOURNAL 
Thursday, May 3. The Entomological Society, at the National Museum, at 8 p.m. 
Program: G. F. Warts: On the diseases of insects. J. M. Aupricn: A unique egg 
laying apparatus in the Tachinid fly. 
Saturday, May 5. The Philosophical Society, at the Cosmos Club, at 8.15 p.m. 
Program: C, Lmroy Mauisinezr: I'ree air pressure maps and their accuracy. J.P. 
» Avur: Aerial navigation. 
Wediiesday, May 9. The Geological Society, at the Cosmos Club, at 8 p.m. Pro- 
grain: Witt1am Bowin: The theory of isostasy and its significance in geology. 
Thursday, May 10. The Chemical Society, at the Cosmos Club, at8 p.m. Program: 
Stunt Night. 
