The texts cited use a variety of long and short dashes, generally with no relationship to the number of letters omitted. For this e-text, short dashes are separated, while longer dashes are connected:

D---n Molley H——ns for her Pride.

The Augustan Reprint Society
THE

MERRY-THOUGHT:

OR, THE

Glass-Window and Bog-House

MISCELLANY.

Part I