ANNOUNCEMENTS OF MEETINGS OF THE ACADEMY AND 



AFFILIATED SOCIETIES 



Saturday, May 21. The Philosophical Society, at the Cosmos Club, at 8.15 

 p.m. Program: 

 H. A. Marmer: Relation of coastal currents and winds on the Pacific Coast. 

 S. J. Mauchly: New results concerning the diurnal variation of atmospheric electricity 

 L. A. Bauer: New relations between terrestrial magnetism, terrestrial electricity, and 

 solar activity. 



Thursday, June 2. The Entomological Society, at the National Museum, 

 at 8 p.m. Program : 



Notes and exhibition of specimens. 



PROGRAMS ANNOUNCED SINCE THE PRECEDING ISSUE OE THE JOURNAL' 



Saturday, April 30. The Biological Society, at the Cosmos Club, at 8 p.m. Program: J. 

 N. Rose: Discovery of a remarkable cactus from Hayti. Joseph Grinnei^l : The principle 

 of rapid peering, in birds. T. S. Palmer : Notes on some parrots imported into the United 

 States. E. A. Goldman: Rats in the War Zone. 



Tuesday, May 3. The Botanical Society, at the Cosmos Club, at 8 p.m. Program: 

 Arno Viehoever: Edible and poisonous beans of the lima type. C. D wight Marsh: 

 Poisonous whorled milkweeds. Peter BissET: Roses for garden decoration. 



Thursday, May 5. The Entomological Society, at the National Museum, at 8 p.m. Pro- 

 gram: A. B. Gahan: Phytophagous Chalcididae. Notes and exhibition of specimens. 



Tuesday, May 10. The Institute of Electrical Engineers, at the Cosmos Club, at 8:15 p.m. 

 Program: Moving pictures illustrating the production and use of X-rays. Moving 

 pictures of the lumber industry. Annual elections. 



. Thursday, May 12. The Chemical Society, at the Cosmos Club, at 8 p.m. Program: 

 Symposium on optical methods as applied to chemical investigations. W. E. MEGGERS: 

 Quantitative spectrum analysis. W. E. Mathewson: Estimation of colorless substances 

 by spectro-photometric methods. I. G. Tumsr: A' direct-reading spectro-photometer for 

 measuring the transmissivity of liquids. Frederick Bates: Polarimetry. F. E- Wright: 

 Crystal optics in chemistry. 



Saturday, May 14. The Biological vSociety, at the Cosmos Club, at 8 p.m. Program: F. 

 G. Ashbrook: Recent notes on the fur trade in the United States. S. A. Rohwer:/m- 

 jurious and beneficial insect galls. 



Tuesday, May 17. The Geological Society, at the Interior Department, at 8 p.m. Pro- 

 gram : Emh, S. Fischer : Economic investigations in China. 



'Received too late for publication before the date of the meeting. 



