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THE INTERNATIONAL UNION FOR THE STUDY 
OF SOCIAL INSECTS has announced the publication of the pro- 
ceedings of the Symposium held in September, 1975, on “Pheromones 
and Defensive Secretions in Social Insects.” Orders for this publica- 
tion [250 pages] should be sent to Dr. R. Brossut, Universite de 
Dijon, Laboratoire de Zoologie, Boulevard Gabriel, 21000 Dijon, 
France. Price, including postage: regular mail, $15; air mail, 
$16.50. 
