Field Museum 



of Natural History 



Bulletin 



Published since 1930 by 



Field Museum of Natural History 



Founded 1893 



Editor/Designer: David M. Walsten 

 Production Liaison: Pamela Stearns 

 Staff Photographer: Ron Testa 



Board OF Trustees 



Robert A. Pritzker 



Chairman 

 Mrs. T. Stanton Armour 

 Robert O. Bass 

 Gordon Bent 

 Mrs. Philip D. Block III 

 Willard L.Boyd, 



President 

 Robert D. Cadieux 

 Worley H.Clark 

 James W. Compton 

 Frank W. Considine 

 TTiomas E. Donnelley II 

 Thomas j. Eyerman 

 Marshall Field 

 Ronald J. Gidwitz 

 Wayne E. Hedien 

 Clarence E. Johnson 

 Richard M. Jones 

 John James Kinsella 

 Robert D. Kolar 

 WaiiamKunkierlll 

 Hugo J. Melvoin 

 Leo F. Mull in 

 James J. O'Connor 



Mrs. James J. O'Connor 

 James H. Ransom 

 John S. Runnells 

 Patrick G. Ryan 

 William L. Searle 

 Mrs. Theodore D. Tieken 

 E. Leland Webber 

 Blaine J. Yarrington 



Life Trustees 



Harry O. Bercher 

 Bowen Blair 

 Stanton R. Cook 

 Mrs. Edwin J. DeOista 

 William R. Dickinson, Jr. 

 Mrs. David W. Grainger 

 Clifford C. Gregg 

 Mrs. Robert S. Hartman 

 Edward Byron Smith 

 Robert H. Strotz 

 John W. Sullivan 



CONTENTS 



May 1989 



Volume 60, Number 5 



MAY EVENTS AT HEID MUSEUM 3 



TROPKAL FORESTS AND THE NUMBER OF PUNTS 

 AND ANIMALS ON PUNET EARTH 



By William Burger, Curator of Vascular Plants S 



COlUaiNG SMALL MAMMALS IN THE ATUNTK 

 RAIN FORESTS OF BRAZIL 



By Barbara E. Brown, Technical Assistant, Mammals 16 



A DAY IN THE LIFE OF THE A.B. LEWIS PROJEG 22 



PUNT COLLECTING IN PAUWAN 



By Djaja Djendoel Soejarto, Research Associate, Botany 24 



FIOO MUSEUM TOURS 30 



COVER 



Costa Rican cloud forest. Photo by Bin Burger See pp 8-14 



Volunteer at Field Museum 



Learn something new or share your expertise — a wide 

 variety of challenging and rewarding volunteer oppor- 

 tunities for either weekdays or weekends are currently 

 available. Please call the Volunteer Coordinator at 

 (312) 922-9410, extension 360, for more information. 



MEMBERS' NIGHT 



Friday, May 5 

 5:00-10:00pm 



Field Museum of Naiurai History Bu/(c"n i USPS 898-940) is published monthly, ciccpt combined July August issue, by Field Museum of Natural Hisior>, Roosevelt Road ai Lake Shore Drive. Chicago. IL 60605-2496, Copynghl 1989 FieW 

 Museum of Natural History. Subscriptions: S6. 00 annually S3 00 for schools Museum membership includes SuZ/rrin subscription. OpiniiMi!) expressed by authon<are then own and do not necessarily reflect the policy of Field Museum. Unsolicited 

 manuscripts are welcome. Museum phone: (312) 922-94 10 Notification ofaddress change should irw'lude address label and be sent to Membership Dcpanmeni. Postmaster: Please send fwm 3579 to Field Museum of Natural History. Roosevelt Road M 

 Lake Shore Dnve. Chicago. IL 60605-2496. ISSN: 0015-070?. Secortd class postage paid at Chicago. Illinois and additional mailing office. 



