Volume 42 (1) - January 1980

Cover

Article
Prehistoric Bear Signs and Black Bear (Ursus americanus) Utilization of Hurrican River Cave, Arkansas
Norman W. Yongsteadt and Jean O. Youngsteadt

Article
A Sabertooth Cat Smilodon floridanus (Leidy), from Hurricane River Cave, Northwest Arkansas
Oscar Hawksley, Norman W. Yongsteadt and Jean O. Youngsteadt

Article
Cave Location and Exploration in Schoharie County, New York
John Mylroie

Volume 42 (2) - April 1980

Cover

Selected Abstracts from the 1979 National Speleological Society Convention in Pittsfield, Massachusetts

Earthwatch
Hidden Cave

Volume 42 (3) - August 1980

Cover

Article
Alpha Radiation Levels in Two Caves Related to External Air Temperature and Atmospheric Pressure
Gary M. Ahlstrand

Article
Cave Development in the Guadalupe Mountains: A Critical Review of Recent Hypotheses
Donald G. Davis

Article
Fluctuations in a Population of the Cave Salamander Eurycea lucifuga
Albert A. Williams

Article
Climatic Change and the Evolution of Cave Invertebrates in the Grand Canyon, Arizona
Stewart B. Peck

Earthwatch
Natural Trap

Volume 42 (4) - October 1980

Cover

Bats as a Public Health Hazard

Article
The Fish and Wildlife Service Bat Program in Southern New England
Edward R. Ladd

Article
Bat Rabies in the United States
C.V. Trimarchi

Article
A Summary of State Bat Legislation
Carol Conroy

Article
Notes on Summer Bat Activity at Michigan Caves
Allen Kurta

Article
Notes of the Determination of Bat Populations Using Photographic Measurements
Tom Warden

Selected Abstracts from the 1980 National Speleological Society Convention in St. Paul, Minnesota

Article
Additional Comments on the Pleistocene Mammalian Fauna of Harrodsburg Crevice, Montroe County, Indiana
Patrick J. Munson, Paul W. Parmalee and John E. Guilday