Found the following hamletworks.org entries referring to line 604
View Commentary Note for 603
603
Enter Hamlet, Horatio
{and}
Marcellus.
..
View Commentary Note for 604
604
Ham. The ayre bites
{shroudly, it is very colde.}
<shrewdly: is it very cold?>
1.4.1
View Immaterial Textual Note for 604
604
Ham. The ayre bites
{shroudly, it is very colde.}
<shrewdly: is it very cold?>
1.4.1
View Material Textual Note for 604
604
Ham. The ayre bites
{shroudly, it is very colde.}
<shrewdly: is it very cold?>
1.4.1