Found the following hamletworks.org entries referring to line 817

View Material Textual Note for 816-817
816-7 Hora. There needes no Ghost my Lord, come from the | graue  
817To tell vs this.  

View Commentary Note for 816
816-17 Hora. There needes no Ghost my Lord, come from the | graue  
817 To tell vs this.1.5.126