iv National Geograi^liic Magazine. 



ILLUSTRATIONS 



Page. 



Plate 1 — Front of Muir Glacier and Mount Case, looking eastward . 19 



2 — Ice Pinnacles at end of Muir Glacier 23 



3 — Mount Wright and upper part of Dirt Glacier, from shoul- 

 der of Mount Case 25 



4— White Glacier 27 



5 — The southeastern Tributary, from Tree Mountain 29 



6— Girdled Glacier 31 



7 — Main Ice Stream of Muir Glacier 33 



8— Mount Wright 35 



9— Mount Young 37 



10 — Moraines 39 



11 — Girdled Glacier, from Tree Mountain 41 



12— Buried Forest .' 43 



13— End of Muir Glacier 47 



14— General Map of Muir Glacier 53 



15 — Map of northern part of Muir Inlet 55 



16 — Geologic Map of Vicinity of Muir Glacier 63 



17 — Estimates of the Map Value of existing Mother Maps .... 116 



18— Index Map of the Yukon District 162 



19— Yukon District- Sheet 1 162 



20— Yukon District— Sheet 2 162' 



Reid : Figure 1 — End of Alpine Glacier 45 



2 — End of a Tidewater Glacier 48 



3 — Diagram illustrating Refraction 52 



4 — Longitudinal Section of Wood from the buried 



Forest 76 



5 — Transverse Section of Wood from the buried 



Forest 77 



