1. Quadrupedalism in primates

   • M. D. Rose

   OriginalPaper Pages: 337 - 357

2. Group changing in free-ranging male rhesus monkeys

   • Lee C. Drickamer
   • Stephen H. Vessey

   OriginalPaper Pages: 359 - 368

3. The role of play in social organization: Comparative observations on squirrel monkeys (Saimiri)

   • John D. Baldwin
   • Janice I. Baldwin

   OriginalPaper Pages: 369 - 381

4. The effects of interspecies infant interaction upon social behavior ofMacaca irus andErythrocebus patas

   • Robert P. Baker
   • David G. Preston

   OriginalPaper Pages: 383 - 392

5. On the design of check-sheets

   • R. A. Hinde

   Reports Pages: 393 - 406

6. Notes on chimpanzee interactions with small carnivores in Gombe National Park, Tanzania

   • Geza Teleki

   Reports Pages: 407 - 411

7. A further description of the control role in pigtail macaques,Macaca nemestrina

   • Euclid O. Smith

   Reports Pages: 413 - 419

8. ‘Agonistic buffering’ in the wild barbary macaque,Macaca sylvana L.

   • Andrew Whiten
   • Thelma J. Rumsey

   Reports Pages: 421 - 425

9. Age of sexual maturity in laboratory-born pairs of rhesus monkeys (Macaca mulatta)

   • Terry Maple
   • J. Erwin
   • G. Mitchell

   Reports Pages: 427 - 428

10. Announcement: Fifth Congress of the International Primatological Society

    Note Pages: 429 - 429

11. Book reviews

    • Mitsuo Iwamoto

    BookReview Pages: 430 - 431