line 12 score
line 12 annotation not in Darwin's hand [not transcribed]
line 13 score
line 13 annotation not in Darwin's hand [not transcribed]
lines 15—17 apparently unintentional mark
lines 20—22 apparently unintentional mark
line 22 score
line 23 underline "que ... fils"
line 24 underline "membranes ... unissent"
line 25 underline "trachée"