From the Southern Travellers Handbook for 1965/66 #7
Your regular second-class travellers are deep fellows. They come early to get a back seat - or at all events, to sit with their backs to the engine.
They watch the weathercocks too, and make their selection of place according to the wind [ED.: there was no glass in the windows then] and if it be warm weather, are chatty and communicative, especially as many of them are in the habit of meeting every day in the train. But in cold weather the second-class travellers talk but little. They wrap up the minute they get into the train, preparing for the worst; and after a few exchanged courtesis - lending an umbrella to the outsider, or spreading a cloak over two or three pairs of knees - you hear their voices no more.