Transcription:
4 A main range, and vast ice floes from the Tuolumne above Hetchy Hetchy broke over into the Merced basin by the Yo Semite,
Cascade and Tamarac tributaries. Most of this Tuol- umne ice had to cross the great canon reaching from near the Soda Spring
to Hetchy thus. drawing 1. Yo Dr Joseph Le Conte. Yo Semite, Dec 17. '72 Dear Le Conte. My seasons work is
done. I have had one gen- eral view of the Merced basin above Yo Semite and am aston- ished at the magnitude of the ancient
glaciers with which it was universally flooded, and of the work which they accom- plished. The entire basin is one glacial
monument covered with inscriptions, some graved in small line characters too minute for our eyes, others dif- ficult to read
because of their magnitude, the depth of canon and height of dome composing the separate letters thereof. 00634