197

3

very strongly: this elevation probably choked up C. Negro Isthmus (same height with Elizabeth Island?)

Currents through the mountains being choked render this more probable. (anyhow it was an old channel & is now closed): The (N part) Sts of Magellan being drained by St Sebastian were not traversed by the main stream: hence the land allued was joined. —

Otherwise it must be a very great upheaval to choke up a channel when streams cut out deep channel. (in narrowest 62 fathoms). — Animals passed over; the currents eat a passage through from the S. Bay: (Proofs of inland bays. consuming cliffs). — X

197 verso

X. Fresh elevations raised land present height. —

[sketch]

How far are these lines of deposition in the coarsest part of beds in St of Magellan? —

198

4)

The advantage of this hypothesis is leaving the narrows always a channel. — for if they had once been joined, it is difficult to imagine the sea. could have eaten a passage: the sea can only, when guided by a valley eat in a large curvature: which makes the explanation 2. narrow difficult. — It would be wrong for the sake of hypothesis to neglect evidence of animals & correspondence of cliffs. —

198 verso

Elevations probably took place when. the 350 or 250 plain oozes from the sea. if the former, the sea must have been shallower than the coast of Pat; which is not probable: — Anyhow the anterior beds having been removed by strong currents through passages in the mountains: these were deposited at some epoch period

soil & some shells soon distributed over the gravel. —

T. del alluvium & high central alluvium of different ages —

Braker	N 1620		Orozee, south later	970
	S 1397		Sebastian C.	190
Double Hill St Sebastian	290		do. 9 hill	950
Elizabeth Isd	150
Esp Santo	182
H. Cliff S of do	250		E of C. Forward	+/256	(1536)
C. Negro	160		SE of d W. Bay	+/115	690
Narrow (1) S. Seb	120		down to P. St. Ann	110 - bottom	660
Orange Point	210
High land s. of do	(607)