Articles Page Numbers AVIAN BIOGEOGRAPHY OF THREE MAN-MADE WETLANDS 43-47 BIOTIC INDEX, CONDUCTIVITY, AND BIOLOGICAL OXYGEN DEMAND IN THREE LOCAL STREAMS 1-4 CHANGE IN COLOR-PHASE COMPOSITION OF EASTERN SCREECH-OWL (OTUS ASIO) 69-73 COMPARISON OF NUMBERS OF SMALL MAMMALS CAPTURED IN FIELD AND FOREST HABITATS AT THE RAYSTOWN FIELD STATION 9-12 COMPOSITION OF AN OAK-HICKORY FOREST IN CENTRAL PENNSYLVANIA FOLLOWING GYPSY MOTH DEFOLIATION 57-62 EFFECT OF CHLORINE ON MACROINVERTEBRATES IN CROOKED CREEK 37-42 EFFECT OF HEMLOCK ON FISH ABUNDANCE IN STANDING STONE CREEK 22-26 EFFECT OF SLOPE ASPECT ON FIELD UTILIZATION BY WHITE-TAILED DEER (ODOCOILEUS VIRGINIANUS) 74-76 EFFECT OF SUBSURFACE GEOLOGY ON THE WATER QUALITY OF SPRINGS AT THE RAYSTOWN FIELD STATION 63-68 EFFECTS OF DROUGHT ON RED MAPLE (ACER RUBRUM) BRANCH GROWTH 31-36 EFFECTS OF pH AND NICHE PARTITIONING ON THE ABUNDANCE AND DISTRIBUTION OF WOOD FROG AND SPOTTED SALAMANDER EGG CLUSTERS 17-21 EFFECTS OF TREE ABUNDANCE AND DISPERSION ON THE HOME RANGES OF THE EASTERN GRAY SQUIRREL (SCIURUS CAROLINENSIS) 27-30 IRON, MANGANESE, AND SULFATE CONCENTRATIONS IN TREATED AND UNTREATED WATER SAMPLES OF WELLS AT THE RAYSTOWN FIELD STATION 52-56 IS SQUIRREL FORAGING ACTIVITY ASSOCIATED WITH TEMPERATURE? 5-8 REPRODUCTIVE ISOLATION IN AMPHIPOD POPULATIONS 13-16 TEMPERATURE AND SWIMMING SPEED OF THE SPOTTED SALAMANDER (AMBYSTOMA MACULATUM) 48-51
