Horns, [374].
Horseshoe glaciers, [383], [386], [387].
Hot springs, [191];
colors in, due to algæ, [194].
Hovey, E. O., cited, [136], [137], [148].
Hovey, H. C., cited, [183], [195].
Howchin, W., cited, [298].
Howe, E., cited, [140].
Howell, cited, [325].
Hudson River, narrows of, [174].