In the early fifties of the 19th century the taste for mountaineering rapidly developed for several very different reasons.
He would then begin again at the next fifty; seeming to commence at number one each time, as though he could not count more than fifty, and it was only by such a large number of fifties being found together, that his astonishment at the multitude of pages was excited.
Flat Fifties by the sound of it.
There were wide eighteenth- century ball gowns, women in little black dresses, one in a fifties poodle skirt, and several in dark dresses with ornate brocade on the bodice, like that of wealthy Middle Age royalty.
He didn't want to wait until he was in his fifties to start having children.