52 Tree 2 ft dia 100 ft high 24 ft long top sec 17 yrs old 5 ½ dia (see young [tree] 70 ft [low]) (10 ft 7 yrs old. 1 ¾ in dia [sketch: Topmost 2 ft of young [autonomous] sequoia] The bulging cragginess of Seq’ trunks at base is due in some measure to the roughness of soil. [Griz] Giant rests on crumbling [granite] angular in mass blocks from 3 to 20 in dia. & is therefore much knotted & contorted in compliance therewith Trees in level alluvium least [bulged] & knotted [scarcely] at all. Erosion of soil has left [rootly] [portion] of trunk exposed. The quantity of post gl [glacier] erosion [ ] below Big  grove Mariposa is not
53 Greater than 6 ft [feet] in bed of stream This erosion is well marked upon solid granite rib over wh [which] the stream pours in a picturesque full . Some 50 or 60 ft Potholes not more than one foot at present flood levels. Such pothole very enduring as in ancient rivers
Original journal dimensions: 9.5 x 16 cm.
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John Muir, journals, drawings, writings, travel, journaling, naturalist