[97]

[Annotated diagrams]

Exact copies

To be cut close both above & below for lettering & types ─ Base line on level of sea a little thicker than other lines ─ other lines fine.─ Shading??

à NB. All these original drawings must be carefully preserved.

[98]

[Annotated diagrams]

[South America, p. 6: "No. 1.— section of ste-formed plains south of Nuevo Gulf."; p. 7: "No. 2.— section of plains in the bay of St. George."; p. 7: "No. 3.— section of plains at Port Desire."; p. 7: "No. 4.— section of plains at Port S. Julian."; p. 8: "No. 5— section of plains at the mouth of the Rio Santa Cruz."]

altered into 1/20 of inch

Vertical scale in this & the four following cuts 1/10 of inch to 100 ft. horizontal scale infinitely contracted.

N.B. Aug. M. stands for angular or trigonometrical measurement

Barom. M. for measurement taken with the Barom.

Est. measurements estimated by the Officers of the Survey.

I am [thinking] there ought all to be a 1/20 of inch 1 foot? Ought they not to be checked?

(Not to be sent)