Found the following hamletworks.org entries referring to line 651

View Commentary Note for 651
651 Ham. It will not speake, then {I will} <will I> followe it.1.4.63

View Immaterial Textual Note for 651
651 Ham. It will not speake, then {I will} <will I> followe it.1.4.63

View Material Textual Note for 651
651 Ham. It will not speake, then {I will} <will I> followe it.1.4.63

View Commentary Note for 653
653 Ham. Why what should be the feare,1.4.64