[103a]

[page in pencil, pin holes show that this was attached to other sheets]

Estuary at mouth

Width of valley, cut through, [illeg] when lava — boulder form

Expands into plains — sea shells  sand dune.

Tenacoes — smooth state of gravel — [illeg] section.

State how my observations show there difference rising of plains (drawing)

Great surface plain

Plains between where valley widest

D t D2 6 to 7 miles; in upper third less about 5 miles; (1 ½ mile lat. F. D t DN)

25 N Cliffs 5.5 miles from coast

=E n. traced for 40 miles to [illeg] cliffs = & more Eastward

Length of straits 85 miles. — total length 160 miles

Valley widens in  71º, 20' — at 140 miles from coast with hill [illeg] of it.  16 miles wide. = & widens a little=

3 shells in 71º - 294 dn sea (say 300) 105. miles from sea mouth of river

(30 miles from river)

1 — at our furthest point — v 140 from [illeg] & 410 ft — (70 from [illeg] creek of Pacific)

Head plain 50ft above river: no 30. & river 410

At [illeg] Sound creek traces cordillera Lat 52º S

—(1) 6400 highest peak of Cordillera

I speak as if great valley E to t a was 6 to 10 wide

Martens drawing taken of plain-[illeg] (450 ft)

In Dn in 24 miles a rise of 185 ft, pretty good observation =

97 miles of coast to 1416 plains

April 28th 84 mils W of mout of river.

29th about 100 from mouth of river — (915) 16 miles lower down) (ie. Long 71º 5'0)

(Valleys more ramified at heads. P. Desire)

103av 

(S. Cruz. Width of valley. p. 6)

22d/5 set of Plains —gravel worn by earth; // generally upper beds denuded// some plains differ only in thickness of gravel

lower plains not as regular, alluvial.=

Blocks of Lava on c.n.           not generally all seen together [three calculations with totals:] 575 869 253

Lower plains at head mud alluvial action

//Heighest inland cliffs appear last after 29th.//

29th (measured)

103b

[a small scrap of paper, once pinned]

[measurements of height of river bed above sea]

103bv

On the origin of valley

De la Beche Theoretical Researches p. 198 & 200 [De la Beche 1834]

103c

[a small scrap of paper, once pinned]

Diff. between cn & dn = 228

    Do    do     do           = 243

Diff between cn & En = 529.

E.n. above sea 1416  above river 1168 (100 miles from mouth of river) April 29th [calculations totalling:] 104 776 248 425

103cv

De la Beche Theoret Researches p. 177

Fertility of lake theory for origin of valleys.— [calculations totalling:] 185 529