Vol.11, No.1 JUNE 2004

<ESSAY>
Lack of "Group Play" in Wild Chimpanzees.
By Toshisada Nishida

<NOTE>
Position and Movement of the Testes of Wild Chimpanzees at Mahale.
By Nakai Masashi & Zamma Koichiro

<NOTE>
Chimpanzee Attitude toward a Seriously Weakened Adolescent Female at Mahale.
By Masaki Shimada & Mosi Matumula

<NOTE>
On the Chimpanzees of Kakungu, Karobwa and Ntakata.
By Koichiro Zamma, Eiji Inoue, Mtunda Mwami, Bunde Haluna, Silindila Athumani, & Shaka Huseni <