Add punctuation: I learned more from his rambling lectures than from those of anyone else at Princeton I remember the first lecture of his I ever attended
A: ... I learned more from his rambling lectures than from those of anyone else at Princeton. I remember the first lecture of his I ever attended.

Add punctuation: As a single bud out of the many thousands produced year after year under uniform conditions on the same tree has been known suddenly to assume a new character and as buds on distinct trees growing under different conditions have sometimes yielded nearly the same varietyfor instance buds on peachtrees producing nectarines and buds on common roses producing mossroseswe clearly see that the nature of the conditions is of quite subordinate importance in comparison with the nature of the organism in determining each particular form of variationof not more importance than the nature of the spark by which a mass of com
A: As a single bud out of the many thousands produced year after year under uniform conditions on the same tree, has been known suddenly to assume a new character; and as buds on distinct trees, growing under different conditions, have sometimes yielded nearly the same varietyfor instance, buds on peach-trees producing nectarines, and buds on common roses producing moss-roseswe clearly see that the nature of the conditions is of quite subordinate importance in comparison with the nature of the organism in determining each particular form of variation;of not more importance than the nature of the spark by which a mass of com-

Add punctuation: and the newsletter I discover another piece of previously undetected
A:
and the newsletter I discover another piece of previously "undetected"