M Mammals, Age of 67-69 Marfa 50 Mariscal Canyon 22, _61_, 62, 64 Mariscal (Lindsey) Mine 15, 104-5 Mesa de Anguila 18, 64 Mesquite, honey 77, 80 Millipede 33 Mosquitofish 74, _76_ O Ocotillo _29_-30 P Panther Pass 94, 102, 115 Peccary 32, 34, _45_, 82 Plants 22, _26_, 28-32, 62, 74-75, 99, 114-15 Persimmon Gap 13, 66 Petroglyphs _85_ Population 12-13, 15, 18 Presidio 59 Pricklypear _14_, 30, _31_, 32 R Raccoon 73 Rafting 122-23 Rainfall 22, 53, 93 Ranching 18, 49, _50-51_ Rat, kangaroo _38_-39, 56 Rio Conchos 59, 64 Rio Grande 6-22 _passim_, 59-60, 90; photos _8-11_ Rio Grande Village 60, 73-77, 120 Roadrunner _38-39_, _121_ S Sam Nail Ranch 49 Santa Elena Canyon 22, 23 62, 63, 64, 114-15; photos, _9-11_, _58_, _122_ Scorpion _33_, 124 Settlements _60_ Shafter, William H. _86_ Sierra del Carmen 18, 23, 64, 66 Snakes _36-37_, 38, 40, 124 Sotol 85 Swallows, cliff 56, 62, _63_ T Tamarisk 49, _52_, 53, 62 Terlingua Abaja mine 75, 114 Tinaja, Ernst _42_, 43, 48 Toad, Couch’s spadefoot _44_ Tornillo Flat 68, 80-81 Trees _20-21_, 22, 70, 93-107 _passim_. _See also_ Cottonwood; Tamarisk Turtle 61 V Victorio, Chief 86, _87_ W Waldron Mine _104-5_ Warbler, colima 120 Water 43, 48-49, 59, 77, 107-8; _See also_ Rainfall Wildflowers 53-54, _55_, 56, _57_ Window, the _cover_, _24-25_, 108 Y Yucca 85, _88_, _114_ * GPO:1962-361-611/103 Handbook 119 The National Park Service expresses its appreciation to all those persons who made the preparation and production of this handbook possible. The Service also gratefully acknowledges the financial support given this handbook project by the Big Bend Natural History Association, a nonprofit group that assists interpretive efforts at Big Bend National Park. _Illustrations_ All photographs and other artwork not credited below are from the files of Big Bend National Park and the National Park Service.