1. Ecological study of the saddle backed tamarin (Saguinus fuscicollis) in Northern Bolivia

   • Masaaki Yoneda

   OriginalPaper Pages: 1 - 12

2. Field observations on group size and composition of the common marmoset (Callithrix jacchus jacchus), at Tapacura, Brazil

   • Robert C. Hubrecht

   OriginalPaper Pages: 13 - 21

3. A model for relating troop size and home range area in a primate species

   • Hiroyuki Takasaki

   OriginalPaper Pages: 22 - 27

4. Infant-use by male gelada in agonistic contexts: Agonistic buffering, progeny protection or soliciting support?

   • R. I. M. Dunbar

   OriginalPaper Pages: 28 - 35

5. Early infant development and maternal care in free-ranging vervet monkeys

   • Phyllis C. Lee

   OriginalPaper Pages: 36 - 47

6. Female-infant interactions among free-ranging stumptail macaques (Macaca arctoides)

   • Alejandro Estrada
   • Rosamond Estrada

   OriginalPaper Pages: 48 - 61

7. Descriptive and contextual analysis of eye covering behavior in captive rhesus macaques (Macaca mulatta)

   • Bernard Thierry

   OriginalPaper Pages: 62 - 77

8. Peer separation in infant chimpanzees, a pilot study

   • Deborah S. Snyder
   • Charles E. Graham
   • Martin Reite

   OriginalPaper Pages: 78 - 88

9. Variables influencing one-zero and instantaneous time sampling outcomes

   • Hoi K. Suen
   • Donald Ary

   OriginalPaper Pages: 89 - 94

10. Learning how to learn: The significance and current status of learning set formation

    • Allan M. Schrier

    OriginalPaper Pages: 95 - 102

11. Blood chemistry of the common marmoset (Callithrix jacchus) maintained in an indoor-outdoor environment: Primate comparisons

    • Diane Willenbrock McNees
    • Roscoe W. Lewis
    • Frank J. Stein

    OriginalPaper Pages: 103 - 109

12. Histological and microbiological aspects of the vagina in captive howler monkeys (Alouatta caraya)

    • Juan Alberto Claver
    • Orestes Jorge Colillas
    • Bruno Luis Travi

    OriginalPaper Pages: 110 - 116

13. Non-seasonal breeding pattterns in stumptail macaques (Macaca arctoides)

    • Euclid O. Smith

    Short Communication Pages: 117 - 122

14. Plasma progesterone levels throughout the ovarian cycle of the common marmoset (Callithrix jacchus)

    • S. D. Kholkute

    Short Communication Pages: 123 - 126

15. Book reviews

    • Hitoshige Hayaki
    • Ken Nozawa

    BookReview Pages: 127 - 129