8 NOKTII AMERICAN FAUNA. [no. 16. 



I'.ajje. 



Fig. 23. A large prostrate tree of white-bark pine, a little below tiinbeilinc . 11 



24. Black alpine hemlocks near Squaw Creek 42 



25. Group of alpiuo hemlocks near Deer Canyon 43 



26. Trunk of alpine hemlock, showing thifkeniug and curvatun' of base. 44 



27. Group of alpine hemlocks 45 



28. Diagram showing average hourly march of temperature 48 



29. Dwarf pines ending abruptly ahmg cold east side of ridge 50 



30. Diagram of Shasta showing relations of life zones 52 



31. Winter earth plugs of pocket gopher 96 



32. Mound made by ])ocket gopher. (Photographed by "W. H.Osgood). 96 



33. Rock cony. (Photographed by F. Stephens) 99 



34. Mink. (Drawn by Ernest S, Thompson) , 105 



35. Maiten. (Drawn by Ernest S. Thomi)Son) 106 



36. Red-tail. (Drawn by J. L. Kidgway) 112 



37. Sparrow hawk. (Drawn by J. L. Ridgway) 113 



38. Arctic three-toed woodpecker. (Drawn by L. A. Fuertes) 115 



39. Clark crow. (Drawn by L. A. Fuertes) 120 



40. Clark crow. (Photographed by Walter K. Fisher) 121 



41. Western evening grosb<ak. (Drawn by L. A. Fuertes) 122 



42. AVhite-crowued sparrow. (Drawn by L. A. Fuertes) 125 



43. Audubon warbler. (Drawn by E. A. Fuertes) 129 



44. White helh-bore. (Photographed by Walter K. Fisher) 140 



45. Manzanita chaparral 157 



46. Monument on summit of Shasta. (Photographed by W. II. Osgood. 169 



