"MY DEAR MARGARET:--I did mean to have returned to Milton on Thursday, but unluckily it turns out to be one of the rare occasions when we, Plymouth Fellows, are called upon to perform any kind of duty, and I must not be absent from my post. 
'My dear Margaret,
'I did mean to return to Milton on Thursday, but unluckily it turns out to be one of the rare occasions when we Plymouth Fellows are called upon to perform a duty, and I must not be absent from my post. 